3. 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
4. CONTENTS
What is Holography?
Hologram
Hologram properties
Working of Holography
Recording a Hologram
Applications of Holography
Photography Vs Holography
Advantages & Dis-advantages
Conclusion
Bibliography
5. 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.”
6. Cont…
The three dimensions are height, width, and depth
It is known as Lensless Photography
It produces Life like images
Dennis Gabor…Father of holography and
holographic techniques
Later, he received the Nobel prize in
Physics in 1971
7. HOLOGRAM
A photograph of an interference pattern which,
when suitably illuminated by laser light, produces
a three-dimensional image.
8. HOLOGRAM PROPERTIES
If 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
9.
10. Working of Holography:
Laser light… usually helium-neon (HeNe) laser is used
Beam splitter…device that use mirrors and prisms to split
laser beam into two beams
1. Object beam
2. Reference beam
Mirrors…Direct the beams of light to correct locations
Holographic Film…to record image very high resolution
Can be seen through naked eye
Image floats in free space
11. 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
12.
13. Reconstruction
When a hologram is later illuminated with coherent light of the same
frequency that created it, a three-dimensional image of the subject
appears.
14. APPLICATIONS OF HOLOGRAPHY
Optical Computers
Bio-medical Applications
Compact disk
Grocery store
Holographic Interferometery
Holographic Scanners
Holostores
15. 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.
16. 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.
18. Cont…
Holographic interferometry
is used in numerous laboratories
for non-destructive testing. It
Visually reveals structural
faults without damaging the
specimen.
19. Continue…
Holographic scanners are
Used in store check-out counters
for reading the bar codes. A
rotating computer-generated
hologram is responsible for both
the scanning and the detecting
of the scattered light.
20. Cont…
Holostore is a holographic computer memory system
being manufactured to replace your disc drive. It will have
thousands time more memory capacity and no mechanical
movements.
23. Photography Vs Holography
PHOTOGRAPHY
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
24. Advantages:
Cost effective
Higher storage capacity
Increased feasibility of objects(depth)
Enables the achievement of multiple image on a
single plate and give 3-D images
Ability to combine with other technologies
25. DISADVANTAGES:
Provide static images
Don not produce images of complex movement
Require complicated precise machinery to
produce and view an image
Reference illumination beams are collinear
26. 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