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Larry Coldren From Ultrasonics To PICs To VCSELS John Bowers

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Page 1: Larry Coldren From Ultrasonics To PICs To VCSELS · L. A. Coldren Stanford University, Stanford, Califomia 94305 and Belt Telephone Laboratories, Murmy Hill, New Jersey 07974 and

Larry Coldren

From UltrasonicsTo PICs To VCSELS

John Bowers

Page 2: Larry Coldren From Ultrasonics To PICs To VCSELS · L. A. Coldren Stanford University, Stanford, Califomia 94305 and Belt Telephone Laboratories, Murmy Hill, New Jersey 07974 and

Fibers!

• Larry has worked in fiber optics for decades…• But he started long, long ago in acoustic fibers…

“Acoustic Cladded Fiber Delay Lines,” G.D. Boyd, L.A. Coldren, and R.N. Thurston

A Long and Illustrious Career…

Page 3: Larry Coldren From Ultrasonics To PICs To VCSELS · L. A. Coldren Stanford University, Stanford, Califomia 94305 and Belt Telephone Laboratories, Murmy Hill, New Jersey 07974 and

Page 4: Larry Coldren From Ultrasonics To PICs To VCSELS · L. A. Coldren Stanford University, Stanford, Califomia 94305 and Belt Telephone Laboratories, Murmy Hill, New Jersey 07974 and

Amplifiers

•Optical amplifiers part of a key patent on Tunable lasers

•But, Larry started on amplifiers long, long ago…• Not at 200 THz, but at 200 MHz…

Page 5: Larry Coldren From Ultrasonics To PICs To VCSELS · L. A. Coldren Stanford University, Stanford, Califomia 94305 and Belt Telephone Laboratories, Murmy Hill, New Jersey 07974 and

Page 6: Larry Coldren From Ultrasonics To PICs To VCSELS · L. A. Coldren Stanford University, Stanford, Califomia 94305 and Belt Telephone Laboratories, Murmy Hill, New Jersey 07974 and

First Conference Overlap: 1980

H.C. Tuan, J. E. Bowers, and G. S. Kino, “Theoretical and Experimental Results for Monolithic SAW Memory Correlators,” IEEE Transactions on Sonics and Ultrasonics, 27 (6), 360-369, November 1, 1980

Page 7: Larry Coldren From Ultrasonics To PICs To VCSELS · L. A. Coldren Stanford University, Stanford, Califomia 94305 and Belt Telephone Laboratories, Murmy Hill, New Jersey 07974 and

From First to Latest Joint Paper….

T. Komljenovic, R. Helkey, L. Coldren, and J. E. Bowers, “Sparse aperiodic arrays for optical beam forming and LIDAR”, Optics Express, (25)3, 2511-2528, February 6, 2017

J. E. Bowers, L. A. Coldren, B. R. Hemenway, B. I. Miller and R. J. Martin, “1.55 µm Multisection Ridge Lasers,” Electronic Letters, 19 (14), 523-525, July 7, 1983

100 joint papers later

On topics from Lasers, Processing, VCSELs, PICs…

Page 8: Larry Coldren From Ultrasonics To PICs To VCSELS · L. A. Coldren Stanford University, Stanford, Califomia 94305 and Belt Telephone Laboratories, Murmy Hill, New Jersey 07974 and

Larry ColdrenLong Wavelength VCSELs

0 5 10 15 20

-18

-12

-6

0

6

12

18

4.43.01.75

1.0

0.7

Freq

uenc

y re

spon

se (d

B)

Frequency (GHz)

0.35

Short Wavelength VCSELs

GaAs

InP

John Bowers

Page 9: Larry Coldren From Ultrasonics To PICs To VCSELS · L. A. Coldren Stanford University, Stanford, Califomia 94305 and Belt Telephone Laboratories, Murmy Hill, New Jersey 07974 and

Ring Cavity Tunable LasersSGDBR Tunable Lasers

Si

InP

Larry Coldren John Bowers

Page 10: Larry Coldren From Ultrasonics To PICs To VCSELS · L. A. Coldren Stanford University, Stanford, Califomia 94305 and Belt Telephone Laboratories, Murmy Hill, New Jersey 07974 and

Thank you, Larry!

Text Complexi ty in the Common Core Classroo m Patricia Coldren Lee County Schools pcoldren@lee. k 12. nc. us

Lumentum Overview - s22.q4cdn.coms22.q4cdn.com/946249800/files/doc_presentations/2016/LITE-B-Riley...Lumentum Overview Chris Coldren ... CDC . FLEX SPECTRUM . NG Metro . Internet and

Digital Forensics at Stanford University Stanford

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Tunable Semiconductor Lasers - Larry Coldren Group · 2020-01-07 · Tunable Semiconductor Lasers a tutorial Larry A. Coldren University of California, Santa Barbara, CA [email protected]

STANFORD GEOTHERMAL PROGRAM STANFORD UNIVERSITY · STANFORD GEOTHERMAL PROGRAM STANFORD UNIVERSITY STANFORD, CALIFORNIA 94305 SGP-TR-35 SECOND ANNUAL REPORT TO U.S. DEPARTMENT OF

Patricia Coldren August 23, 2012 [email protected] (919)356-7739

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STANFORD UNIVERSITY Contributory Retirement …collegeretirementjournal.org/wp-content/uploads/2012/03/Stanford...STANFORD UNIVERSITY Contributory Retirement Plan ... the Stanford

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STANFORD GEOTHERMAL PROGRAM STANFORD ......STANFORD GEOTHERMAL PROGRAM STANFORD UNIVERSITY STANFORD, CALIFORNIA 94305 SGP-TR-35 SECOND ANNUAL REPORT TO U.S. DEPARTMENT …

stanford continuing studies Stanford University Libraries

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Stanford Health Library - Stanford Medicine | Stanford

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Home | Stanford HAIHome | Stanford HAI

StanforD flute enSemble Stanford Flute Ensemble

Stanford Geothermal Program Interdisciplinary …...Stanford Geothermal Program Interdisciplinary Research in Engineering and Earth Sciences Stanford University Stanford, California

STANFORD GEOTHERMAL PROGRAM STANFORD UNIVERSITY

Text Dependen t Question ing Patricia Coldren Lee County Schools pcoldren@lee. k 12. nc. us

Getting Started on Stanford Sites · Getting Started on Stanford Sites Cynthia Mijares Stanford Web Services 2013 STANFORD DRUPAL CAMP. Agenda WHY STANFORD SITES? ! Eligibility !

academy.delmar.eduacademy.delmar.edu/Courses/ITSC1358/eBooks/man-troff.pdfNROFF⁄TROFF User’s Manual Joseph F. Ossanna Bell Laboratories Murray Hill, New Jersey 07974 Introduction

cravenu3a.files.wordpress.com€¦ · Web view2021. 7. 21. · AD HOC WALKING - Mike Valiant – 07974 630253, [email protected] - There is no programme; walks are proposed

Bell hboratorles, Murray HI//, New Jersey 07974 (Received

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Collaborative Reform Initiative: Six-Month Assessment ...Collaborative reform initiative Six-Month Assessment Report on the Philadelphia Police Department James “Chip” Coldren,

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Tribute to the Career of Larry Coldren: An Old World’s ... · Tribute to the Career of Larry Coldren: An Old World’s Perspective K.J. Ebeling, Ulm University, Ulm, Germany.

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Moreton Eye, Leominster, Herefordshire, HR6 0DP & CoSamuel Wood & Company, Tamberlaine House, The Buttercross, Ludlow, Shropshire, SY8 1AW. Telephone 01584 875207 / 07974 015764