Acquisition and replay systems for direct-to-digital holography and holovision
Abstract
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.
- Inventors:
-
- Knoxville, TN
- Clinton, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 875078
- Patent Number(s):
- 6525821
- Application Number:
- 09/477267
- Assignee:
- UT-Battelle, L.L.C. (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
G - PHYSICS G03 - PHOTOGRAPHY G03H - HOLOGRAPHIC PROCESSES OR APPARATUS
- DOE Contract Number:
- AC05-96OR22464
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- acquisition; replay; systems; direct-to-digital; holography; holovision; improvements; described; method; recording; off-axis; hologram; splitting; laser; beam; reference; reflecting; mirror; illumination; beamsplitter; passing; objective; lens; focusing; focal; plane; digital; recorder; form; digitally; transforming; fourier; transform; obtain; set; results; writing; spatial; light; modulator; photorefractive; crystal; impose; holographic; diffraction; grating; pattern; replaying; illuminating; laser beam; fourier transform; /356/359/
Citation Formats
Thomas, Clarence E, and Hanson, Gregory R. Acquisition and replay systems for direct-to-digital holography and holovision. United States: N. p., 2003.
Web.
Thomas, Clarence E, & Hanson, Gregory R. Acquisition and replay systems for direct-to-digital holography and holovision. United States.
Thomas, Clarence E, and Hanson, Gregory R. Wed .
"Acquisition and replay systems for direct-to-digital holography and holovision". United States. https://www.osti.gov/servlets/purl/875078.
@article{osti_875078,
title = {Acquisition and replay systems for direct-to-digital holography and holovision},
author = {Thomas, Clarence E and Hanson, Gregory R},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 2003},
month = {Wed Jan 01 00:00:00 EST 2003}
}
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