Acquisition and replay systems for direct-to-digital holography and holovision

Thomas, Clarence E; Hanson, Gregory R

Acquisition and replay systems for direct-to-digital holography and holovision

Patent · Wed Jan 01 04:00:00 EST 2003

OSTI ID:875078

Thomas, Clarence E ^[1]; Hanson, Gregory R ^[2]

Knoxville, TN
Clinton, TN

Improvements to the acquisition and replay systems for direct-to-digital holography and holovision are described. A method of recording an off-axis hologram includes: splitting a laser beam into an object beam and a reference beam; reflecting the reference beam from a reference beam mirror; reflecting the object beam from an illumination beamsplitter; passing the object beam through an objective lens; reflecting the object beam from an object; focusing the reference beam and the object beam at a focal plane of a digital recorder to form an off-axis hologram; digitally recording the off-axis hologram; and transforming the off-axis hologram in accordance with a Fourier transform to obtain a set of results. A method of writing an off-axis hologram includes: passing a laser beam through a spatial light modulator; and focusing the laser beam at a focal plane of a photorefractive crystal to impose a holographic diffraction grating pattern on the photorefractive crystal. A method of replaying an off-axis hologram includes: illuminating a photorefractive crystal having a holographic diffraction grating with a replay beam.

Research Organization:: LOCKHEED MARTIN ENERGY RES COR

DOE Contract Number:: AC05-96OR22464

Assignee:: UT-Battelle, L.L.C. (Oak Ridge, TN)

Patent Number(s):: US 6525821

Application Number:: 09/477267

OSTI ID:: 875078

Country of Publication:: United States

Language:: English

References (11)

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Related Subjects

/356/359/
acquisition
beam
beamsplitter
crystal
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diffraction
digital
digitally
direct-to-digital
focal
focusing
form
fourier
fourier transform
grating
hologram
holographic
holography
holovision
illuminating
illumination
impose
improvements
laser
laser beam
lens
light
method
mirror
modulator
objective
obtain
off-axis
passing
pattern
photorefractive
plane
recorder
recording
reference
reflecting
replay
replaying
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set
spatial
splitting
systems
transform
transforming
writing

Acquisition and replay systems for direct-to-digital holography and holovision

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References (11)

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