holography & its applications
TRANSCRIPT
Holography & it’s Applications
Submitted to : Ma’am Huma Submitted by : Group 4 B.S Physics (4th Semester) Section (A) GCWU Sialkot
Group Members: • Bisma Shakir 14020210-018• Ishrat Fardos 14020210-012• Faiqa Barkat 14020210-027
•Maham Idrees 14020210-010•Saeyda Rida 14020210-028•Fauzia Tehleel 14020210-033•Warda Jabbar 14020210-048
CONTENTSWhat is Holography?Hologram Hologram propertiesWorking of Holography Recording a HologramApplications of HolographyPhotography Vs HolographyAdvantages & Dis-advantagesConclusionBibliography
WHAT IS HOLOGRAPHY? “Holography from the Greek, whole+ write) is the
science of producing holograms” It is an advanced form of photography that allows
an image to be recorded in three dimensions “Holography is a method of producing a visual
three-dimensional (3-D) image of an object by means of light wave patterns recorded on a photographic plate.”
Cont…The three dimensions are height, width, and depthIt is known as Lensless PhotographyIt produces Life like images Dennis Gabor…Father of holography andholographic techniquesLater, he received the Nobel prize in Physics in 1971
HOLOGRAMA photograph of an interference pattern which,
when suitably illuminated by laser light, produces a three-dimensional image.
HOLOGRAM PROPERTIESIf you look at these holograms from different
angles, you see objects from different perspectives, just like you would if you were looking at a real object
It shows Divisible property i.e If you cut one in half, each half contains whole views of the entire holographic image
Working of Holography:Laser light… usually helium-neon (HeNe) laser is usedBeam splitter…device that use mirrors and prisms to split
laser beam into two beams1. Object beam 2. Reference beamMirrors…Direct the beams of light to correct locationsHolographic Film…to record image very high resolutionCan be seen through naked eyeImage floats in free space
HOW TO CREATE A HOLOGRAM To create a hologram, a laser beam (coherent light) is split
in two beams : Reference beam: that stays undisturbed
object beam: strikes the object and then bounces onto the plate
Working of holography is divided into two phases: Recording Reconstruction
ReconstructionWhen a hologram is later illuminated with coherent light of the same frequency that created it, a three-dimensional image of the subject appears.
APPLICATIONS OF HOLOGRAPHYOptical ComputersBio-medical ApplicationsCompact diskGrocery storeHolographic InterferometeryHolographic ScannersHolostores
Cont… Optical computers Will use holograms as "circuit elements". Parallel processing is made possible because when a Hologram is addressed, all the information comes out simultaneously.
Cont…Biomedical applications of holography is actively
pursued in the U.S. and Europe. Holograms are made inside live organs through optical fibers, providing more details than any previous alternate techniques.
Cont…
Compact discs players useholograms to handle light.
Grocery store scanners use spinning holograms.
Cont…Holographic interferometryis used in numerous laboratoriesfor non-destructive testing. It Visually reveals structural faults without damaging the specimen.
Continue…Holographic scanners are Used in store check-out countersfor reading the bar codes. A rotating computer-generated hologram is responsible for both the scanning and the detecting of the scattered light.
Cont…Holostore is a holographic computer memory system being manufactured to replace your disc drive. It will havethousands time more memory capacity and no mechanicalmovements.
Cont…Video Gaming Living Room
Cont…Teaching & Education:
Photography Vs HolographyPHOTOGRAPHY
2-D recording process. Ordinary light can be
used Lens system Image has poor
resolution
HOLOGRAPHY 3-D recording process. Only laser light can be
used Lensless system Very high resolution
Advantages:Cost effectiveHigher storage capacityIncreased feasibility of objects(depth)Enables the achievement of multiple image on a
single plate and give 3-D imagesAbility to combine with other technologies
DISADVANTAGES:Provide static imagesDon not produce images of complex movementRequire complicated precise machinery to
produce and view an imageReference illumination beams are collinear
CONCLUSION Holographic technology has endless applications as
far as the human mind can imagine Holographic technologies are not just about art or
business communication, they are about safety, security, education ,planning and the strength of our civilization here and beyond
Holographic Technology will became a very integral part of human societies and civilizations in future
BIBLIOGRAPHYwww.scienceclasified.com/He-In/Hologram-and-Holograph
y.htmlwww.slideshare.net/singhaishali5/introduction-to-holograp
hy-39013364http://www.slideshare.net/vigneshwarvs/new-holography-t
echnology-all-ppthttp://www.slideshare.net/DheerajYadav28/regeneration-o
f-hologram-from-a-slicehttp://www.winnerscience.com/science/physics/laser-
physics/difference-beween-holography-and-photography/