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Vitara-T and Vitara-T HP Modelocked Ti:S Laser SystemPre-Installation Manual

Pre-Installation ManualVitara-T & Vitara-T-HP Modelocked Ti:S Laser

5100 Patrick Henry DriveSanta Clara, CA 95054 USA

Vitara-T/T-HP Modelocked Ti:S Laser Pre-Installation Manual

This document is copyrighted with All Rights Reserved. Under copyright laws, thisdocument must not be copied in full or in part, or reproduced by any other media,without the express written permission of Coherent, Inc. (Coherent). Permittedcopies must have the same proprietary and copyright notices as were attached tothe original. This exception does not permit copies—whether or not sold—to bemade for others; however, all the material purchased can be sold, given, or loanedto another person. Under the law, “copying” includes translation into anotherlanguage.

Coherent, the Coherent Logo, and the Vitara are registered trademarks ofCoherent, Inc. All other trademarks or registered trademarks are the property oftheir respective owners.

Patents referenced in this manual are active when the manual is printed (see lastpage for the date). You are advised to check to see if the patents are still activewww.coherent.com/company/patents.

Technical Support

In the U.S.:

Should you experience any difficulties with your laser or need any technicalinformation, please go to our web site www.Coherent.com. Should you needfurther assistance, please contact Coherent Technical Support by [email protected] or telephone, 1-800-367-7890 (1-408-764-4557 outside the U.S.). Please be prepared to supply the model and laser headserial number of your laser system also the description of the problem and anyattempted corrective steps to the Product Support Engineer responding to yourrequest.

Telephone coverage is available Monday through Friday (except U.S. holidays andcompany shutdowns). Inquiries received outside of normal office hours will becaptured by our automatic answering system and will be quickly returned the nextbusiness day.

Outside the U.S.:

If you are located outside the U.S., please visit www.Coherent.com for technicalassistance, or contact your local Service Representative. Service Representativetelephone numbers and addresses can be found on the Coherent web site.

Coherent provides telephone and web-based technical assistance as a service toits customers and assumes no liability for any injury or damage that can occur atthe same time with such services. Under no conditions do these support serviceseffect the terms of any warranty agreement between Coherent and the buyer.Operation of any Coherent laser with any of its interlocks defeated is always at theoperator's own risk.

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Table of Contents

TABLE OF CONTENTS

1 Introduction ...................................................................................................................................................11.1 Signal Words and Symbols in this Manual .....................................................................................1

1.1.1 Signal Words ..............................................................................................................................11.1.2 Symbols .......................................................................................................................................2

1.2 Preface .......................................................................................................................................................31.3 Export Control Laws Compliance.......................................................................................................41.4 The Operator’s Manual..........................................................................................................................4

1.4.1 Intended Audience....................................................................................................................51.4.2 Availability and Use ..................................................................................................................51.4.3 Typographic Conventions ......................................................................................................51.4.4 Cited Standards.........................................................................................................................6

1.5 Laser Terminology...................................................................................................................................61.6 Units of Measurements .........................................................................................................................71.7 Feedback Regarding Documentation...............................................................................................7

1.7.1 Feedback Address....................................................................................................................7

2 Laser Safety...................................................................................................................................................92.1 Hazards ......................................................................................................................................................9

2.1.1 Optical Safety...........................................................................................................................102.1.1.1 Recommended Precautions and Guidelines...................................................10

2.1.2 Electrical Safety.......................................................................................................................112.1.2.1 Recommended Precautions and Guidelines...................................................12

2.2 Integrated Pump Lasers......................................................................................................................132.2.1 Lifting Safety.............................................................................................................................13

2.3 Designated Use .....................................................................................................................................132.4 Maximum Accessible Radiation Level ............................................................................................142.5 Safety Features and Compliance with Government Requirements .....................................14

2.5.1 Laser Classification................................................................................................................142.5.2 Protective Housing .................................................................................................................152.5.3 Safety Interlocks......................................................................................................................152.5.4 Output Shutter .........................................................................................................................152.5.5 Remote Interlock Connector ...............................................................................................152.5.6 Key Control ...............................................................................................................................152.5.7 Laser Radiation Emission Indicators................................................................................162.5.8 Operating Controls .................................................................................................................16

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2.5.9 Display Screen.........................................................................................................................162.5.10 Manual Reset Mechanism.................................................................................................162.5.11 Location of Safety Labels...................................................................................................17

2.6 Electromagnetic Compatibility...........................................................................................................172.7 Environmental Compliance ................................................................................................................17

2.7.1 RoHS Compliance..................................................................................................................172.7.2 China-RoHS Compliance.....................................................................................................172.7.3 Waste Electrical and Electronic Equipment (WEEE, 2002) ......................................18

2.8 Sources of Additional Information ....................................................................................................252.8.1 Laser Safety Standards ........................................................................................................25

3 Description and Specifications ................................................................................................273.1 Introduction..............................................................................................................................................273.2 Vitara-T/T-HP Laser Head..................................................................................................................273.3 Verdi G-series Laser Head.................................................................................................................283.4 Vitara Controller.....................................................................................................................................293.5 Specifications .........................................................................................................................................29

4 Installation and Utility Requirements .................................................................................314.1 Receiving and Inspection ...................................................................................................................314.2 Utility and Environmental Requirements .......................................................................................324.3 System Dimensions and Weight ......................................................................................................334.4 External Interlock...................................................................................................................................384.5 Pre-Installation Checklist ....................................................................................................................394.6 Installation................................................................................................................................................404.7 Electrical and Cable Connections....................................................................................................41

5 Controls, Indicators and Features.........................................................................................455.1 Controls and Indicator Locations .....................................................................................................45

6 Operation........................................................................................................................................................536.1 System Turn-on......................................................................................................................................54

6.1.1 Turn-on (Cold Start) ...............................................................................................................546.1.2 Daily Turn-on (Warm Start)..................................................................................................55

6.2 Center Wavelength/Bandwidth Tuning ..............................................................................................................................566.2.1 Option 1 .....................................................................................................................................566.2.2 Option 2 .....................................................................................................................................576.2.3 Option 3 .....................................................................................................................................57

6.3 Mode Profile............................................................................................................................................58

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Table of Contents

6.3.1 Measuring Mode Profile at Focus......................................................................................586.3.2 Observing the Filtered Beam on a Card..........................................................................606.3.3 Measuring the Unfocused Mode Profile in the Far Field (FF) ..................................63

6.4 System Turn-Off.....................................................................................................................................646.4.1 Daily Turn-Off ...........................................................................................................................646.4.2 Turn-off (Complete Shutdown) ...........................................................................................64

7 External Computer Control/Software .................................................................................657.1 RS-232 & USB Connections..............................................................................................................657.2 Control Software....................................................................................................................................657.3 Main Panel...............................................................................................................................................667.4 Advanced Panel ..................................................................................................................................687.5 Motor ................................................................................................................................................70

8 Troubleshooting ......................................................................................................................................718.1 General System Troubleshooting.....................................................................................................718.2 Specific Troubleshooting.....................................................................................................................72

8.2.1 Laser is Not Lasing ................................................................................................................728.2.2 Laser is Not Modelocking.....................................................................................................738.2.3 CW Breakthrough ...................................................................................................................738.2.4 Positive Dispersion Modelocking or Q-switching .........................................................748.2.5 Unstable Output Power.........................................................................................................758.2.6 Mode Profile is Distorted ......................................................................................................75

8.3 Fault Messages......................................................................................................................................758.3.1 Vitara Faults .............................................................................................................................75

8.3.1.1 COM ERR...................................................................................................................758.3.1.2 VERDI COM ERR ....................................................................................................768.3.1.3 Interlock .......................................................................................................................76

8.3.2 Pump Laser Faults .................................................................................................................778.3.2.1 Main TEC Error .........................................................................................................778.3.2.2 LBO/BRF Temp Not OK .........................................................................................778.3.2.3 Interlock Fault ............................................................................................................788.3.2.4 Glue Board Error ......................................................................................................788.3.2.5 LDD at Current Limit................................................................................................79

8.4 Software Crash ......................................................................................................................................808.4.1 Green GUI.................................................................................................................................80

8.4.1.1 Configure Laptop Battery Settings......................................................................808.4.1.2 Install Drivers for UT232R.....................................................................................848.4.1.3 Install OPSL Software.............................................................................................96

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8.4.1.4 Install Vitara Software...........................................................................................1088.4.2 Black GUI ................................................................................................................................120

8.4.2.1 Run the Install Everything Executable File ....................................................1208.4.2.2 Confirm the Drivers Installed Correctly ...........................................................1228.4.2.3 Confirm the OPSL Software Installed Correctly ...........................................1278.4.2.4 Confirm the Vitara Software Installed Correctly ...........................................1348.4.2.5 Load the Vitara Settings File ..............................................................................137

9 Maintenance ..............................................................................................................................................1399.1 Fuse Replacement..............................................................................................................................139

10 Packing Procedure ..........................................................................................................................14110.1 Procedure............................................................................................................................................142

I Parts List ........................................................................................................................................................147

II Accessories ...............................................................................................................................................149II.1 Power Meter Accessories.................................................................................................................149

II.1.1 Recommendation..................................................................................................................149II.2 Factory Calibration..............................................................................................................................150II.3 How Do You Reach Us? ...................................................................................................................150

III Warranty ......................................................................................................................................................151III.1 Optical Products .................................................................................................................................151III.2 Conditions of Warranty.....................................................................................................................151III.3 Other Products....................................................................................................................................152III.4 Responsibilities of the Buyer..........................................................................................................152III.5 Limitations of Warranty.....................................................................................................................152

Glossary ...........................................................................................................................................................155

Index ....................................................................................................................................................................157

1 Introduction ...................................................................................................................................................11.1 Signal Words and Symbols in this Manual .....................................................................................1

1.1.1 Signal Words ..............................................................................................................................11.1.2 Symbols .......................................................................................................................................2

1.2 Preface .......................................................................................................................................................31.3 Export Control Laws Compliance.......................................................................................................41.4 The Operator’s Manual..........................................................................................................................4

1.4.1 Intended Audience....................................................................................................................5

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Table of Contents

1.4.2 Availability and Use ..................................................................................................................51.4.3 Typographic Conventions ......................................................................................................51.4.4 Cited Standards.........................................................................................................................6

1.5 Laser Terminology...................................................................................................................................61.6 Units of Measurements .........................................................................................................................71.7 Feedback Regarding Documentation...............................................................................................7

1.7.1 Feedback Address....................................................................................................................7

2 Laser Safety...................................................................................................................................................92.1 Hazards ......................................................................................................................................................9

2.1.1 Optical Safety...........................................................................................................................102.1.1.1 Recommended Precautions and Guidelines...................................................10

2.1.2 Electrical Safety.......................................................................................................................112.1.2.1 Recommended Precautions and Guidelines...................................................12

2.2 Integrated Pump Lasers......................................................................................................................132.2.1 Lifting Safety.............................................................................................................................13

2.3 Designated Use .....................................................................................................................................132.4 Maximum Accessible Radiation Level ............................................................................................142.5 Safety Features and Compliance with Government Requirements .....................................14

2.5.1 Laser Classification................................................................................................................142.5.2 Protective Housing .................................................................................................................152.5.3 Safety Interlocks......................................................................................................................152.5.4 Output Shutter .........................................................................................................................152.5.5 Remote Interlock Connector ...............................................................................................152.5.6 Key Control ...............................................................................................................................152.5.7 Laser Radiation Emission Indicators................................................................................162.5.8 Operating Controls .................................................................................................................162.5.9 Display Screen.........................................................................................................................162.5.10 Manual Reset Mechanism.................................................................................................162.5.11 Location of Safety Labels...................................................................................................17

2.6 Electromagnetic Compatibility...........................................................................................................172.7 Environmental Compliance ................................................................................................................17

2.7.1 RoHS Compliance..................................................................................................................172.7.2 China-RoHS Compliance.....................................................................................................172.7.3 Waste Electrical and Electronic Equipment (WEEE, 2002) ......................................18

2.8 Sources of Additional Information ....................................................................................................252.8.1 Laser Safety Standards ........................................................................................................25

3 Description and Specifications ................................................................................................27

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3.1 Introduction..............................................................................................................................................273.2 Vitara-T/T-HP Laser Head..................................................................................................................273.3 Verdi G-series Laser Head.................................................................................................................283.4 VitaraController ......................................................................................................................................293.5 Specifications .........................................................................................................................................29

4 Installation and Utility Requirements .................................................................................314.1 Receiving and Inspection ...................................................................................................................314.2 Utility and Environmental Requirements .......................................................................................324.3 System Dimensions and Weight ......................................................................................................334.4 External Interlock...................................................................................................................................334.5 Pre-Installation Checklist ....................................................................................................................354.6 Installation................................................................................................................................................364.7 Electrical and Cable Connections....................................................................................................39

5 Controls, Indicators and Features.........................................................................................435.1 Controls and Indicator Locations .....................................................................................................43

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Table of Contents

LIST OF FIGURES

2-1. Safety Label Locations on Front Bezel of the Vitara Laser Head .............................................192-2. Safety Label Location on Top Cover of the Vitara Laser Head.................................................192-3. Safety Label Locations on Back Bezel of VitaraLaser Head ......................................................202-4. Safety Label Locations on Pump Laser Power Supply ................................................................202-5. Safety Label Locations on the Vitara Controller .............................................................................212-6. Safety Label Descriptions ......................................................................................................................22

3-1. Vitara-T & Vitara-T-HP Laser System.................................................................................................28

4-1. Vitara Laser Head Dimensions (Top View).......................................................................................344-2. Vitara Laser Head Dimensions (Side View) .....................................................................................344-3. Vitara Laser Head Dimensions (Front View)....................................................................................354-4. Verdi-G Power Supply Dimensions.....................................................................................................364-5. Vitara Controller Dimensions ................................................................................................................374-6. “Sub-D” Interlock Connector Pin Diagram........................................................................................384-7. External Interlock Circuit.........................................................................................................................384-8. Vitara-T/T-HP System Connections ....................................................................................................42

5-1. Laser Head Indicators and Features ..................................................................................................455-2. Vitara Controller Indicators and Features .........................................................................................485-3. Power Supply Indicators, Controls and Features...........................................................................50

6-1. Vitara-T & Vitara-T-HP Bandwidth Controls (Motor Tab)..............................................................566-2. Center Wavelength Controls (Motor Tab)..........................................................................................576-3. Slit/Prism Adjustment Controls .............................................................................................................576-4. Comparison of Unfocused NF vs Focused FF Mode Profiles....................................................586-5. Comparison of the Unfiltered vs Filtered Beam on Business Card ..........................................606-6. Measuring the Unfocused, FF Mode Profile ....................................................................................63

7-1. Vitara-T/T-HP Main Panel ......................................................................................................................667-2. Vitara-T & Vitara-HP Advanced Panel................................................................................................687-3. Vitara-T & Vitara-T-HP Control Motor Software ..............................................................................70

8-1. CW Spike Emerging from the Modelock Spectrum .......................................................................738-2. Typical Q-switching and Positive Dispersion Modelock Spectra...............................................74

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8-3. Pump Laser Power Supply Interlock ..................................................................................................778-4. Data Tab of the OPSL GUI.....................................................................................................................788-5. Control Panel..............................................................................................................................................808-6. Hardware and Sound...............................................................................................................................818-7. Power Options ...........................................................................................................................................818-8. Change Plan Settings..............................................................................................................................828-9. Change Power Settings ..........................................................................................................................828-10. Advanced Settings....................................................................................................................................838-11. Create New Folder ...................................................................................................................................848-12. UT232R Folder ..........................................................................................................................................848-13. CDM 2.08.30 WHQL Certified Folder.................................................................................................858-14. CDM v2.08.30 WHQL Certified Application......................................................................................858-15. Extract All.....................................................................................................................................................868-16. Select Destination Folder UT232R......................................................................................................868-17. Confirm Destination and Extract ..........................................................................................................878-18. Continue.......................................................................................................................................................878-19. CDM v2.08.30 WHQL Certified Application......................................................................................888-20. FTDI Chip CDM Drivers..........................................................................................................................888-21. Escalation/Elevation Window................................................................................................................898-22. CDM v2.08.30 WHQL Certified Application......................................................................................898-23. Device Driver Installation Wizard.........................................................................................................908-24. Complete Installation Wizard ................................................................................................................908-25. Plug USB to Serial Cable .......................................................................................................................918-26. Properties ....................................................................................................................................................918-27. Open Device Manager ............................................................................................................................928-28. USB Serial Port .........................................................................................................................................928-29. USB Properties ..........................................................................................................................................938-30. Advanced Port Settings ..........................................................................................................................948-31. Select COM4 ..............................................................................................................................................948-32. Advanced Settings Corrected for COM4...........................................................................................958-33. USB Serial Port COM4............................................................................................................................958-34. Setup Application ......................................................................................................................................968-35. User Account Control Window..............................................................................................................968-36. OPSL GUI Destination Directory..........................................................................................................978-37. OPSL GUI Start Installation...................................................................................................................978-38. Wait for Installation to Complete ..........................................................................................................988-39. Installation Complete ...............................................................................................................................988-40. Restart Computer......................................................................................................................................99

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Table of Contents

8-41. OPSL Software Folder ..........................................................................................................................1008-42. Create OPSL Software Shortcut ........................................................................................................1018-43. Confirm OPSL Shortcut Creation.......................................................................................................1018-44. Plug USB Cable.......................................................................................................................................1028-45. Properties ..................................................................................................................................................1028-46. Open Device Manager ..........................................................................................................................1038-47. USB Serial Ports A and B.....................................................................................................................1048-48. Confirm OPSL GUI Shortcut ...............................................................................................................1058-49. Wait for OPSL Software to Start.........................................................................................................1068-50. Verdi Serial Number...............................................................................................................................1078-51. Vitara-T Setup ..........................................................................................................................................1088-52. Choose Folder C:\Program Files (x86)\Coherent\HOPS...........................................................1088-53. Click OK .....................................................................................................................................................1098-54. Click Finish................................................................................................................................................1098-55. Vitara 2.0.1 Installation Successful ...................................................................................................1108-56. LabVIEW Installation Wizard...............................................................................................................1108-57. Destination Folder Selection Window .............................................................................................. 1118-58. Ready to Install Application Window................................................................................................. 1118-59. Installation Window ................................................................................................................................1128-60. Successful LabVIEW Installation Window ......................................................................................1128-61. C:\Program Files (x86)\Coherent\HOPS .........................................................................................1138-62. Click Rename...........................................................................................................................................1138-63. Rename Vitara Software Application................................................................................................1148-64. Click Properties .......................................................................................................................................1158-65. Change settings for all users...............................................................................................................1168-66. Run this program as an administrator ..............................................................................................1178-67. Create Vitara Software Shortcut ........................................................................................................1188-68. Confirm Vitara GUI Shortcut................................................................................................................1198-69. Install_Everything Windows Batch File............................................................................................1208-70. Installation Starts.....................................................................................................................................1218-71. Restart Prompt.........................................................................................................................................1218-72. Plug USB to Serial Cable .....................................................................................................................1228-73. Properties ..................................................................................................................................................1228-74. Open Device Manager ..........................................................................................................................1238-75. USB Serial Port .......................................................................................................................................1238-76. USB Properties ........................................................................................................................................1248-77. Advanced Port Settings ........................................................................................................................1248-78. Select COM4 ............................................................................................................................................125

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8-79. Advanced Settings Corrected for COM4.........................................................................................1258-80. USB Serial Port (COM4).......................................................................................................................1268-81. OPSL Software Folder ..........................................................................................................................1278-82. Confirm OPSL Shortcut Creation.......................................................................................................1288-83. Plug USB Cable.......................................................................................................................................1288-84. Properties ..................................................................................................................................................1298-85. Open Device Manager ..........................................................................................................................1298-86. USB Serial Ports A and B.....................................................................................................................1308-87. Confirm OPSL Shortcut ........................................................................................................................1318-88. Wait for OPSL Software to Start.........................................................................................................1328-89. Verdi Serial Number...............................................................................................................................1338-90. Click Properties .......................................................................................................................................1348-91. Change settings for all users...............................................................................................................1358-92. Run this program as an administrator ..............................................................................................1368-93. Confirm Vitara GUI Shortcut................................................................................................................1378-94. Vitara 2.X-Settings File .........................................................................................................................138

9-1. Vitara Controller (Top) & Verdi G-Series Power Supply (Bottom) Fuse Location ..............140

10-1. Proper Placement of System Components on Shipping Crate................................................14210-2. Proper Placement of the Maintenance Kit and Operator’s Manual ........................................14310-3. Placement of System Accessories ....................................................................................................14410-4. Location of the Ratchet Straps (3) and System Accessory Box..............................................14410-5. Location of the Retaining Clamps and Screws .............................................................................1452-1. Safety Label Locations on Front Bezel of the Vitara Laser Head .............................................192-2. Safety Label Location on Top Cover of the Vitara Laser Head.................................................192-3. Safety Label Locations on Back Bezel of VitaraLaser Head ......................................................202-4. Safety Label Locations on Pump Laser Power Supply ................................................................202-5. Safety Label Locations on the Vitara Controller .............................................................................212-6. Safety Label Descriptions ......................................................................................................................22

3-1. Vitara-T & Vitara-T-HP Laser System.................................................................................................28

4-1. Vitara Laser Head Dimensions (Top View).......................................................................................344-2. Vitara Laser Head Dimensions (Side View) .....................................................................................344-3. Vitara Laser Head Dimensions (Front View)....................................................................................354-4. Verdi-G Power Supply Dimensions.....................................................................................................364-5. Vitara Controller Dimensions ................................................................................................................37

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Table of Contents

4-6. “Sub-D” Interlock Connector Pin Diagram........................................................................................384-7. External Interlock Circuit.........................................................................................................................384-8. Vitara-T/T-HP System Connections ....................................................................................................40

5-1. Laser Head Indicators and Features ..................................................................................................435-2. Vitara Controller Indicators and Features .........................................................................................465-3. Power Supply Indicators, Controls and Features...........................................................................48

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LIST OF TABLES

4-1. Utility Requirements .................................................................................................................................324-2. Operational Environmental Requirements........................................................................................324-3. Water Chiller Specifications...................................................................................................................334-4. System Dimensions and Weight ..........................................................................................................334-5. Pre-installation Checklist ........................................................................................................................39

5-1. Laser Head Feature Descriptions........................................................................................................475-2. Vitara Controller Feature Descriptions...............................................................................................495-3. Power Supply Feature Descriptions ...................................................................................................51

6-1. Wavelengths of Radiation Generated by the Vitara-T ..................................................................53

7-1. Control Software Main Panel Description .........................................................................................667-2. Control Software Advanced Panel Description ...............................................................................697-3. Control Motor Tab Description ..............................................................................................................70

9-1. Fuse Ratings ............................................................................................................................................139

10-1. Vitara Shipping Crate Contents..........................................................................................................141

I-1. Vitara-T/T-HP Parts List ........................................................................................................................1474-1. Utility Requirements .................................................................................................................................324-2. Operational Environmental Requirements........................................................................................324-3. Water Chiller Specifications...................................................................................................................334-4. System Dimensions and Weight ..........................................................................................................334-5. Pre-installation Checklist ........................................................................................................................38

5-1. Laser Head Feature Descriptions........................................................................................................455-2. VitaraController Feature Descriptions ................................................................................................475-3. Power Supply Feature Descriptions ...................................................................................................49

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Introduction

1 INTRODUCTION

1.1 Signal Words and Symbols in this Manual

This documentation may contain sections in which particular hazards aredefined or special attention is drawn to particular conditions. Thesesections are indicated with signal words in accordance with ANSI Z-535.6and safety symbols (pictorial hazard alerts) in accordance with ANSI Z-535.3 and ISO 7010.

1.1.1 Signal Words

Four signal words are used in this documentation: DANGER, WARNING,CAUTION and NOTICE.

The signal words DANGER, WARNING and CAUTION designate thedegree or level of hazard when there is the risk of injury:

DANGER!Indicates a hazardous situation that, if not avoided, will result in deathor serious injury. This signal word is to be limited to the most extremesituations.

WARNING!Indicates a hazardous situation that, if not avoided, could result indeath or serious injury.

CAUTION!Indicates a hazardous situation that, if not avoided, could result inminor or moderate injury.

The signal word “NOTICE” is used when there is the risk of propertydamage:

NOTICEIndicates information considered important, but not hazard- related.

1


Messages relating to hazards that could result in both personal injury andproperty damage are considered safety messages and not propertydamage messages.

1.1.2 Symbols

The signal words DANGER, WARNING, and CAUTION are alwaysemphasized with a safety symbol that indicates a special hazard,regardless of the hazard level:

This symbol is intended to alert the operator to the presence of addi-tional information.

This symbol is intended to alert the operator to the presence ofimportant operating and maintenance instructions.

This symbol is intended to alert the operator to the danger of expo-sure to hazardous visible and invisible laser radiation.

This symbol is intended to alert the operator to the presence ofdangerous voltages within the product enclosure that may be of suffi-cient magnitude to constitute a risk of electric shock.

This symbol is intended to alert the operator to the danger of Electro-Static Discharge (ESD) susceptibility.

2

Introduction

This symbol is intended to alert the operator to the danger of crushinginjury.

This symbol is intended to alert the operator to the danger of a liftinghazard.

1.2 Preface

This manual contains user information for the Vitara-T/T-HP.

NOTICE!Read this manual carefully before operating the laser for the first time.Failure to follow the instructions and safety precautions in thismanual can result in serious injury or death. Special attention must begiven to the material in “Laser Safety” (p. 9), that describes the safetyfeatures built into the laser. Keep this manual with the product and ina safe location for future reference.

DANGER!Use of controls or adjustments or performance of procedures otherthan those specified herein may result in hazardous radiation expo-sure.

3


1.3 Export Control Laws Compliance

It is the policy of Coherent to comply strictly with U.S. export control laws.

Export and re-export of lasers manufactured by Coherent are subject toU.S. Export Administration Regulations, which are administered by theCommerce Department. In addition, shipments of certain components areregulated by the State Department under the International Traffic in ArmsRegulations.

The applicable restrictions vary depending on the specific productinvolved and its destination. In some cases, U.S. law requires that U.S.Government approval be obtained prior to resale, export or re-export ofcertain articles. When there is uncertainty about the obligations imposedby U.S. law, clarification must be obtained from Coherent or anappropriate U.S. Government agency.

Products manufactured in the European Union, Singapore, Malaysia,Thailand: These commodities, technology, or software are subject to localexport regulations and local laws. Diversion contrary to local law isprohibited. The use, sale, re-export, or re-transfer directly or indirectly inany prohibited activities are strictly prohibited.

1.4 The Operator’s Manual

This Operator Manual is designed to familiarize the user with the Vitara-T/T-HP system and its designated use. It contains important information onhow to install, operate, and troubleshoot the laser system safely, properly,and most efficiently. Observing these instructions helps to avoid danger,reduce repair costs, and downtimes and increase the reliability andlifetime of the laser system.

Installation, deinstallation, servicing, and detailed troubleshooting are onlyto be performed by formal ly trained and instructed personnel.Consequently, these procedures are not contained in the Operator’sManual but in the separate Service Manual.

This Manual:

• describes the physical hazards related to the laser system, the meansof protection against these hazards, and the safety features incorpo-rated in the design of the laser system

• briefly describes the purpose and operation as well as the primaryfeatures, system elements, subsystems, and fundamental lasercontrol routines of the laser system

• describes the fundamental operation of the laser system

4

Introduction

• describes the maintenance procedures for the laser system whichcan be performed by the end user. This includes a time schedule forall periodic routine replacement procedures and a basic trouble-shooting section.

The screenshots in this manual are only examples and may showconfigurations or parameter settings which do not apply to the spec-ified laser system. Changing parameter settings to correspond withscreenshots may reduce laser performance or even damage the lasersystem!

1.4.1 Intended Audience

The Operator’s Manual is intended for all persons that are to work on orwith the laser system. It assumes that the reader has participated in anintroductory training course which has taught them the safe operation ofthe laser system.

None of the procedures described in this manual requires the defeating ofsafety interlocks. Where specific training is required to performprocedures, this is clearly indicated at the beginning of the correspondingsection.

1.4.2 Availability and Use

This Operator’s Manual must always be available wherever the lasersystem is in use. Keep this manual in a safe location for future reference.It must be read and applied by any person in charge of carrying out workwith and on the laser system, such as

• operation (including setting up, troubleshooting in the course of work,removal of production waste, care and disposal of consumables,

• service (maintenance, inspection, repair) and/or• transport.The sections are numbered continuously.sectionsEach step within aprocedure is sequentially numbered. Each procedure starts with the stepnumber one.

1.4.3 Typographic Conventions

Menu commands, inquiries, and prompts are enclosed by quotationmarks.

5


• Example: “Are you sure (Yes/No)?”Single keys on the keyboard and terminal buttons to be pressed ortouched are written in angled brackets.

• Example: Touch to confirm and to continue.Examples are written in non-proportional, upper-case letters to simulatethe appearance of computer displays or printer output.

1.4.4 Cited Standards

Unless otherwise stated, all technical standards cited in this manual relateto the latest version of the standard that is applicable at the date of thepublication of this manual.

This information is in compliance with the Performance Standards forLaser Products, ’ United States Code of Federal Regulat ions ,21 CFR 1040.10(d). In many cases, the international standards (ISO andIEC standards) have been adopted wholly or in part by national or regionalstandards authorities and are known locally under the designationassigned by this authority. For instance, the IEC 60825-1 has beenadopted by the European Committee for Standardization as the standardEN 60825-1 and, in turn, by various national standards authorities asstandards such as DIN EN 60825 (Germany) and BS EN 60825 (UnitedKingdom). The exact content, number and revision date of the nationalstandard may, however, vary from that of the corresponding internationalstandard. For further information, please contact the publisher of therespective national standard.

1.5 Laser Terminology

ISO 11145 (“Optics and Optical Instruments - Lasers and Laser RelatedEquipment - Vocabulary and Symbols”) contains a l ist of laserterminology.

In addition to the terminology used by ISO 11145, IEC 60825-1 uses theterm “laser product”. This term relates to any product or assembly ofcomponents which constitutes or is intended to incorporate a laser. Inother words, the term “laser product” can be used in conjunction with anyof the definitions contained in ISO 11145.

6

Introduction

1.6 Units of Measurements

In this manual, units of measurement are used according to the metricsystem (international system of units (SI)), e.g. meter, millimeter, squaremeter, cubic meter, liter, kilogram, bar, pascal; and imperial system, e.g.tons, pounds, and ounces; gallons and quarts; miles, yards, feet, and inch.

Temperatures are primarily indicated in degrees Celsius (°C) andFahrenheit (°F).

1.7 Feedback Regarding Documentation

If there are any comments regarding the documentation provided, pleasecontact the Coherent Documentation Department.

In any correspondence, please provide the following:

• the document part number, revision, and date of issue,• the section number, page number and, where applicable, the proce-

dure step number,

• a description of any errors,• a proposal for improvements.

1.7.1 Feedback Address

E-mail [email protected]

Post Coherent IncDocumentation and Training Development Department5100 Patrick Henry Drive, MS-P2-49Santa Clara, CA. 95054USA

7


8

Laser Safety

2 LASER SAFETY

NOTICEThis user information is in compliance with section 1040.10 of theCDRH Performance Standards for Laser Products from the Health andSafety Act of 1968.

WARNING!Use of controls or adjustments or performance of procedures otherthan those specified herein may result in hazardous radiation expo-sure.

This laser safety section must be thoroughly reviewed prior to operation ofthe Vitara laser system. Safety instructions presented throughout thismanual must be followed carefully.

2.1 Hazards

Hazards associated with lasers generally fall into the following categories:

• Exposure to laser radiation that may damage the eyes or skin• Electrical hazards generated in the laser power supply or associated

circuits

• Chemical hazards resulting from contact of the laser beam with vola-tile or flammable substances, or released as a result of laser materialprocessing

The above list is not intended to be exhaustive. Anyone operating thelaser must consider the interaction of the laser system with its specificworking environment to identify any potential hazards.

9


2.1.1 Optical Safety

Laser light, because of its special qualities, poses safety hazards notassociated with light from conventional sources. The safe use of lasersrequires all operators, and everyone near the laser system, to be aware ofthe dangers involved. Users must be familiar with the instrument and theproperties of coherent, intense beams of light.

The safety precautions listed below are to be read and observed byanyone working with or near the laser. At all times, ensure that allpersonnel who operate, maintain or service the laser are protected fromaccidental or unnecessary exposure to laser radiation exceeding theaccessible emission limits listed in ‘Performance Standards for LaserProducts,’ United States Code of Federal Regulations, 21CFR1040 10(d).

WARNING!Direct eye contact with the output beam from the laser will causeserious damage and possible blindness.

The greatest concern when using a laser is eye safety. In addition to themain beam, there are often smaller beams present at various angles nearthe laser system. These beams are formed by specular reflections of themain beam at polished surfaces such as lenses or beam splitters. Whileweaker than the main beam, such beams may still carry sufficient intensityto cause eye damage.

Laser beams are powerful enough to burn skin, clothing or paint even atsome distance. They can ignite volatile substances such as alcohol,gasoline, ether and other solvents, and can damage light-sensitiveelements in video cameras, photomultipliers and photodiodes. The user isadvised to follow the precautions below.

2.1.1.1 Recommended Precautions and Guidelines

1. Observe all safety precautions in the pre-installation and Operator’sManuals.

2. All personnel should wear laser safety glasses rated to protectagainst the specific wavelengths being generated. Protective eyewear vendors are listed in the Laser Focus World, Lasers andOptronics, and Photonics Spectra buyer’s guides. Consult the ANSI,ACGIH, or OSHA standards listed at the end of this section for guid-ance.

3. Avoid wearing watches, jewelry, or other objects that may reflect orscatter the laser beam.

10

Laser Safety

4. Stay aware of the laser beam path, particularly when external opticsare used to steer the beam.

5. Provide enclosures for beam paths whenever possible.

6. Use appropriate energy-absorbing targets for beam blocking.

7. Block the beam before applying tools such as Allen wrenches or balldrivers to external optics.

8. Limit access to the laser to qualified users who are familiar with lasersafety practices. When not in use, lasers should be shut downcompletely and/or made off-limits to unauthorized personnel byremoving the power supply key.

9. Use the laser in an enclosed room. Laser light may remain collimatedover long distances and therefore presents a potential hazard if notconfined. It is good practice to operate the laser in a room withcontrolled access.

10. Post warning signs in the area of the laser beam that the laser is inuse.

11. Exercise extreme caution when using solvents in the area of the laser.

12. Never look directly into the laser light source or at scattered laser lightfrom any reflective surface. Never sight down the beam.

13. Set up the laser so that the beam height is either well below or wellabove eye level.

14. Avoid direct exposure to the laser light. Laser beams can easily causeflesh burns or ignite clothing.

15. Advise all those working with or near the laser of these precautions.

WARNING!Laser safety glasses protect the user from eye damage by blockinglight at the laser wavelengths. However, this also prevents the oper-ator from seeing the beam. Use extreme caution even while wearingsafety glasses.

2.1.2 Electrical Safety

The Vitara uses AC and DC voltages in the laser head and controller. Allunits are designed to be operated with protective covers in place. Certainprocedures in this manual require removal of the protective covers. Theseprocedures shall be used by a qualified trained service personnel. Safetyinformation contained in the procedures must be strictly observed byanyone using the procedures.

11


The Vitara controller should be connected to the AC input using a certified3 conductor power cord, < 10 ft length, rated for at least 10 A operation,with a 16 AWG conductor. The power cord provided in the ship kit is ratedfor 1625 W.

DANGER!Normal operation of the Vitara should not require access to the powersupply circuitry. Removing the power supply cover will expose theuser to potentially lethal electrical hazards. Contact an authorizedservice representative before attempting to correct any problem withthe power supply.

2.1.2.1 Recommended Precautions and Guidelines

The following precautions must be observed by anyone working withpotentially hazardous electrical circuitry:

1. Disconnect main power lines before working on any electrical equip-ment when it is not necessary for the equipment to be operating.

2. Do not short or ground the power supply output. Protection againstpossible hazards requires proper connection of the ground terminalon the power cable, and an adequate external ground. Check theseconnections at the time of installation, and periodically thereafter.

3. Never work on electrical equipment unless there is another personnearby who is familiar with the operation and hazards of the equip-ment, and who is competent to administer assistance.

4. When possible, keep one hand away from the equipment to reducethe danger of current flowing through the body if a live circuit is acci-dentally touched.

5. Always use approved, insulated tools.

6. Special measurement techniques are required for this system. A tech-nician who has a complete understanding of the system operation andassociated electronics must select ground references.

12

Laser Safety

2.2 Integrated Pump Lasers

The Vitara system incorporates a Coherent Verdi-GTM laser as asubcomponent. The beam from this laser is hazardous. Refer to the Verdi-G Operator’s Manual for additional safety information.

2.2.1 Lifting Safety

Coherent recommends at least two people unpack and transport theVitara laser system. Remove the laser head and controller from theirshipping containers and install on a bench or machine.

CAUTION!The Vitara laser system weighs approximately 140 Lbs (64kg). Use alifting device to move.

CAUTION!To avoid injury, never place any body parts below a lifted orsuspended laser.

2.3 Designated Use

The Vitara system has been built in accordance with state-of-the-artstandards and recognized safety rules. Nevertheless, its use mayconstitute a risk to life and limb of the user or of third parties or causedamage to other material property.

The laser system shall only be used in technically perfect condition and inaccordance with its designated use and the instructions set out in thismanual, and only by safety conscious persons who are fully aware of therisks involved in operating the laser system. Any functional disorders,especially those affecting the safety of the laser system, should thereforebe rectified immediately.

The Vitara system is a modelocked ultrafast laser oscillator designed foruse in scientific applications and environments. Using the laser system forpurposes other than those mentioned above is considered contrary to its

13


designated use. The manufacturer/supplier cannot be held liable for anydamage resulting from such use. The risk of such misuse lies entirely withthe user.

Operating the laser system within the limits of its designated use alsoinvolves observing the instructions set out in this manual and complyingwith the inspection and maintenance directives.

2.4 Maximum Accessible Radiation Level

The Vitara and its component lasers produce visible and invisible radiationover a wavelength range of 500 to 1100 nm, with a maximum of 10 Wattscontinuous wave power, and 25 nJ maximum energy per < 200 fs pulse[CFR 1040.10 (h)(2)/ EN 60825-1/ IEC 60825-1, Clause 6].

2.5 Safety Features and Compliance with Government Requirements

The following features are incorporated into the instrument to conform toseveral government requirements. The applicable United StatesGovernment requirements are contained in 21 CFR, Subchapter J, part1040 administered by the Center for Devices and Radiological Health(CDRH). The European Community requirements for product safety arespecified in the Low Voltage Directive (LVD) (published in 73/23/EEC andamended in 93/68/EEC). The Low Voltage Directive requires that laserscomply with the standard EN 61010-1/IEC 61010-1 “Safety RequirementsFor Electrical Equipment For Measurement, Control and Laboratory Use”and EN 60825-1/IEC 60825-1 “Safety of Laser Products”. Compliance ofthis laser with the LVD requirements is certified by the CE mark.

2.5.1 Laser Classification

Governmental standards and requirements specify that the laser must beclassified according to the output power or energy and the laserwavelength. The Vitara laser system is classified as Class IV based on 21CFR, Subchapter J, part 1040, section 1040.10 (d). According to theEuropean Community standards, Vitara lasers are classified as Class 4based on EN 60825-1/IEC 60825-1, clause 9. In this manual, theclassification will be referred to as Class 4.

14

Laser Safety

2.5.2 Protective Housing

The laser head is enclosed in a protective housing that prevents humanaccess to radiation in excess of the limits of Class I radiation as specifiedin the 21CFR, Part 1040 Section 1040.10 (f)(1) and Table 1-A/EN 60825-1/IEC 60825-1 clause 4.2 except for the output beam, which is Class 4.

2.5.3 Safety Interlocks

The system incorporates multiple safety interlocks which activate whenthe cavity cover of the laser head is removed. An interlock fault initiationwill terminate all lasing by removing power from the infrared diodes. Whileinstalled, the interlock defeats are directly visible by anyone near thelaser. It is not possible to replace the cavity cover while the interlocks areinstalled. Note that the external laser cover “beauty cover” is notinterlocked and may be removed or re-installed at anytime.

The laser interlocks should be defeated only for the purpose ofmaintenance and service by trained personnel. Extreme caution mustalways be observed when operating the laser with its covers removed[CFR 1040.10 (f)(2)/ EN 60825-1/IEC 60825-1, Clause 4.3].

2.5.4 Output Shutter

A manual output shutter prevents exposure to all laser radiation withoutremoving power from the system [CFR 1040.10 (f)(6)/EN 60825-1/IEC60825-1, clause 4.7].

2.5.5 Remote Interlock Connector

The Vitara laser system is equipped with an external interlock connectoron the rear panel of the power supply. The terminals of this connectormust be electrically joined for the laser to operate [CFR 1040.10 (f)(3)/EN 60825-1/IEC 60825-1, Clause 4.4].

2.5.6 Key Control

Operation of the Vitara requires that the power supply and/or key switchbe in the ON position. The key is removable and the system cannot beoperated when the key is removed [CFR 1040.10 (f)(4)/ EN 60825-1/IEC 60825-1, Clause 4.5].

15


2.5.7 Laser Radiation Emission Indicators

The LASER EMISSION indicators on both the power supply and the laserhead illuminate a few seconds after power is applied to the pump powersupply. The indicators are visible without exposing the operator to laseremission. Amber or white light are used which are visible while wearingthe proper type of safety glasses [CFR 1040.10(f)(5)/ EN 60825-1/IEC 60825-1, clause 4.6].

2.5.8 Operating Controls

The laser controls are positioned so that the operator is not exposed tolaser emission while manipulating the controls [CFR 1040.10(f)(7)/EN 60825-1/IEC 60825-1, clause 4.8].

2.5.9 Display Screen

The display screen on the front panel of the pump laser power supply maybe viewed without exposing the operator to laser emission [CFR1040.10(f)(8)/EN 60825-1/IEC 60825-1, clause 4.9].

2.5.10 Manual Reset Mechanism

Following an interlock fault or unexpected loss of electrical power, laseroperation is resumed keying the power supply off and then on. [CFR1040.10(f)(10)/EN 60825-1/IEC 60825-1, clause 4.11].

NOTICEUse of controls or adjustments or performance of procedures otherthan those specified in the manual may result in hazardous radiationexposure.

CAUTION!Use of the system in a manner other than that described herein mayimpair the protection provided by the system.

16

Laser Safety

2.5.11 Location of Safety Labels

Refer to Figure 2-1 through Figure 2-6 for the location of all safety labels.These include warning labels indicating removable or transportableprotective housings, apertures through which laser radiation is emitted,and labels of certification and identification [CFR 1040.10(g), CFR 1040.2,and CFR 1010.3/ EN 60825-1/IEC 60825-1, Clause 5].

2.6 Electromagnetic Compatibility

The European requirements for Electromagnetic Compliance (EMC) arespecified in the EMC Directive (published in 89/336/EEC).

Conformance to the EMC requirements is achieved through compliancewith the harmonized standard EN61326-1.

Compliance of this laser with the EMC requirements is certified by the CEmark.

2.7 Environmental Compliance

2.7.1 RoHS Compliance

The RoHS directive restricts the use of certain hazardous substances inelectrical and electronic equipment. All components of the Vitara systemare RoHS compliant.

2.7.2 China-RoHS Compliance

The China-RoHS directive restricts the use of certain hazardoussubstances in electrical and electronic equipment. Refer to the figuresbelow for product components that are China-RoHS compliant. There aredifferent labels for the laser head and electronics controller.

17


2.7.3 Waste Electrical and Electronic Equipment (WEEE, 2002)

The European Waste Electrical and Electronic Equipment (WEEE)Directive (2002/96/EC) is represented by a crossed-out garbage containerlabel. The purpose of this directive is to minimize the disposal of WEEE asunsorted municipal waste and to facilitate its separate collection.

18

Laser Safety

Figure 2-1. Safety Label Locations on Front Bezel of the Vitara Laser Head

Figure 2-2. Safety Label Location on Top Cover of the Vitara Laser Head

AVOID EXPOSUREVISIBLE AND INVISIBLE LASER RADIATION

IS EMITTED FROM THIS APERTURE

1

CAUTIONINVISIBLE AND INVISIBLE

LASER RADIATION WHEN OPEN. AVOID

EYE OR SKINEXPOSURE TO DIRECT

OR SCATTEREDRADIATION

LASER ON

CAUTIONINVISIBLE AND INVISIBLE

LASER RADIATION WHEN OPEN. AVOID

EYE OR SKINEXPOSURE TO DIRECT

OR SCATTEREDRADIATION

2

3

19


Figure 2-3. Safety Label Locations on Back Bezel of VitaraLaser Head

Figure 2-4. Safety Label Locations on Pump Laser Power Supply

THIS PRODUCT COMPLIES WITHCDRH PERFORMANCE STANDARDS,

21 CFR SUBCHAPTER J EXCEPTFOR DEVIATIONS PURSUANT TO

LASER NOTICE NO. 50,DATED JULY 26, 2001.

M/N

S/N

MFD

5100 PATRICK HENRY DRSANTA CLARA, CA 95054

INVISIBLE AND VISIBLE LASERRADIATION. AVOID EYE OR

SKIN EXPOSURE TO DIRECTOR SCATTERED RADIATION.CLASS 4 LASER PRODUCTPER IEC/EN 60825-1 (2007)

MODE-LOCKED LASER500-100nm, < 25nJ PER

< 200fs PULSE, < 4W CW

< 25W CW AT 532nm

VISIBLE AND/OR INVISIBLELASER RADIATION WHEN

OPEN AND INTERLOCKDEFEATED!

AVOID EYE OR SKINEXPOSURE TO DIRECT

OR SCATTERED RADIATION.CLASS IV LASER PRODUCT

808-5275

VISIBLE AND/OR INVISIBLELASER RADIATION WHEN

OPEN AND INTERLOCKDEFEATED!

AVOID EYE OR SKINEXPOSURE TO DIRECT

OR SCATTERED RADIATION.CLASS IV LASER PRODUCT

808-5275

4

5

7

9

2

10

8

6

13

7 1110

20

Laser Safety

Figure 2-5. Safety Label Locations on the Vitara Controller




M/N

S/N

MFD


100-240 ~

50/60 Hz

0.5A, 250V

1.0A, 125V

100-240V ~60-50 Hz

100VA Max.

T1A-T0.5A, 250V ~

13

4

10

7

12

21


1. Avoid Exposure to Laser Beam Emitted from Aperture

2. Exposure to Laser Radiation When Interlock DefeatedLASER

EMISSION3. Laser Emission (Silk Screen) for System Emission LED

4. SERIAL NUMBER IDENTIFICATION (LASER HEAD & VITARA CONTROLLER)

Figure 2-6. Safety Label Descriptions (Sheet 1 of 3)

AVOID EXPOSUREVISIBLE AND INVISIBLE LASER RADIATION

IS EMITTED FROM THIS APERTURE




M/N

S/N

MFD


22

Laser Safety

5. System Power, Bandwidth and Pulse Width Identification (Laser Head)

6. WEEE (Waste Electrical and Electronic Equipment) Silk Screen or Sticker

7. Caution Mark

8. Serial Number Identification (Verdi G-Series Power Supply)


INVISIBLE AND VISIBLE LASERRADIATION. AVOID EYE OR

SKIN EXPOSURE TO DIRECTOR SCATTERED RADIATION.CLASS 4 LASER PRODUCTPER IEC/EN 60825-1 (2007)

MODE-LOCKED LASER500-1100nm, < 25nJ PER< 200fs PULSE, < 4W CW

< 25W CW AT 532nm

23


9. China RoHS, Laser Head

10. CE Certification (silk screen or sticker)

11. Voltage Rating Verdi G-Series Power Supply (Silk Screen)

12. Voltage Rating (Vitara Controller)

13. China RoHS, Controller/Power Supply


100-240V ~60-50 Hz

100VA Max.

T1A-T0.5A, 250V ~

24

Laser Safety

2.8 Sources of Additional Information

The following are sources for additional information on laser safetystandards and safety equipment and training.

2.8.1 Laser Safety Standards

Safe Use of LasersDocument Z136.1American National StandardsInstitute (ANSI)www.ansi.org

Guidelines for Laser Safety andHazard AssessmentDirectives PUB 8-1.7Occupational Safety and HealthAdministration (OSHA)U.S. Department of Laborwww.osha.gov

A Guide for Control of Laser HazardsAmerican Conference of Governmentaland Industrial Hygienists (ACGIH)www.acgih.org

Laser Safety GuideLaser Institute of Americawww.lia.org

25

http://www.ansi.orghttp//:www.osha.govhttp://www.acgih.orghttp://www.acgih.orghttp://www.lia.orghttp://www.lia.org


26

Description and Specifications

3 DESCRIPTION AND SPECIFICATIONS

3.1 Introduction

The Vitara-T/T-HP is a Titanium:Sapphire laser oscillator system capableof producing modelocked pulses with bandwidths exceeding 125 nm anda pulse width


3.3 Verdi G-series Laser Head

Based on optically pumped semiconductor laser (OPSL) technology, theVerdi G-series is a robust multiwatt-level continuous-wave, low noise andhigh performance pump laser. The compact cavity design employsintracavity second harmonic generation to produce green (532 nm) visiblelight output, key for ultrafast Ti:Sapphire pumping. OPSL technologyoffers many advantages inherited from its monolithic semiconductor chipused to produce laser light. Unprecedented flexibility in terms of variableoutput power with no effect on beam quality or beam pointing andextremely low noise are characteristics of OPSL lasers. In addition, theshort upper-state lifetime of the OPS chip removes the “green noise”problem as seen in diode pumped solid-state (DPSS) lasers. Verdi G-Series lasers are available as single or multi-transverse mode.

Constructed within a cleanroom environment, the resonator optics areinstalled using Coherent’s exclusive PermAlign™ manufacturing process,resulting in a permanently aligned resonator structure that is extremelystable.

Figure 3-1. Vitara-T & Vitara-T-HP Laser System

28

Description and Specifications

3.4 Vitara Controller

The Vitara controller includes the necessary electronics to control severallaser head sub-systems and serves as the interface between the laserhead and control computer. The Vitara controller also manages all on-board controls and diagnostics features of the laser such as PowerTrack,systems to control bandwidth and center wavelength, and to monitor andinitiate modelocking.

3.5 Specifications

The Customer Data Sheet shipped with each Vitara provides a detaileddescription of system performance. Specifications for all other laserparameters can be found at www.coherent.com.

29


30

Installation

4 INSTALLATION AND UTILITY REQUIREMENTS

4.1 Receiving and Inspection

Inspect shipping containers for signs of rough handling or damage.Indicate any such sig

vitara-t and vitara-t hp modelocked ti:s laser system · pre-installation manual vitara-t &...

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