Introduction to holography

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Introduction to holography

• Vincent Toal
• 3rd February 2005

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l ?/sin? f (spatial frequency) 1/l sin ?/
? f 1/l sin ?/ ? phase 2p sin ?/
?
?
l
?
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Plane wave recording and playback
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laser beam
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Mathematical description of a wave
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Coherence
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Phase conjugation
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Rainbow holography
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Optical pulse recompression
R
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R
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espi
laser
object
image
HOE
CCD camera
Out-of-plane sensitive ESPI system with
holographic splitter/combiner
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espi
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Page-oriented holographic data storage

• Holographic storage characteristics
• High storage capacity - terabytes
• High transfer rates - 1 Gbyte/s
• Quick access times - 100 ?s

• volume is used.
• data is stored as 2D arrays
• many pages can be stored in the same
  volume.
• angular/peristrophic