Single beam write and/or replay of spatial heterodyne holograms
Abstract
A method of writing a spatially heterodyne hologram having spatially heterodyne fringes includes: passing a single write beam through a spatial light modulator that digitally modulates said single write beam; and focusing the single write beam at a focal plane of a lens to impose a holographic diffraction grating pattern on the photorefractive crystal, the holographic diffraction grating pattern including the spatially heterodyne hologram having spatially heterodyne fringes, wherein only said single write beam is incident on said photorefractive crystal without a reference beam. A method of replaying a spatially heterodyne hologram having spatially heterodyne fringes at a replay angle includes: illuminating a photorefractive crystal having a holographic diffraction grating with a beam from a laser at an illumination angle, the holographic diffraction grating pattern including the spatially heterodyne hologram having spatially heterodyne fringes, wherein a difference between said illumination angle and said replay angle defines a diffraction angle .alpha. that is a function of a plane wave mathematically added to original object wave phase and amplitude data of said spatially heterodyne hologram having spatially heterodyne fringes.
- Inventors:
-
- Knoxville, TN
- Clinton, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 919901
- Patent Number(s):
- 7298532
- Application Number:
- 10/166,859
- Assignee:
- UT-Battelle LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
G - PHYSICS G03 - PHOTOGRAPHY G03H - HOLOGRAPHIC PROCESSES OR APPARATUS
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
- DOE Contract Number:
- AC05-96OR22464
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2002 Jun 11
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Thomas, Clarence E., and Hanson, Gregory R. Single beam write and/or replay of spatial heterodyne holograms. United States: N. p., 2007.
Web.
Thomas, Clarence E., & Hanson, Gregory R. Single beam write and/or replay of spatial heterodyne holograms. United States.
Thomas, Clarence E., and Hanson, Gregory R. Tue .
"Single beam write and/or replay of spatial heterodyne holograms". United States. https://www.osti.gov/servlets/purl/919901.
@article{osti_919901,
title = {Single beam write and/or replay of spatial heterodyne holograms},
author = {Thomas, Clarence E. and Hanson, Gregory R.},
abstractNote = {A method of writing a spatially heterodyne hologram having spatially heterodyne fringes includes: passing a single write beam through a spatial light modulator that digitally modulates said single write beam; and focusing the single write beam at a focal plane of a lens to impose a holographic diffraction grating pattern on the photorefractive crystal, the holographic diffraction grating pattern including the spatially heterodyne hologram having spatially heterodyne fringes, wherein only said single write beam is incident on said photorefractive crystal without a reference beam. A method of replaying a spatially heterodyne hologram having spatially heterodyne fringes at a replay angle includes: illuminating a photorefractive crystal having a holographic diffraction grating with a beam from a laser at an illumination angle, the holographic diffraction grating pattern including the spatially heterodyne hologram having spatially heterodyne fringes, wherein a difference between said illumination angle and said replay angle defines a diffraction angle .alpha. that is a function of a plane wave mathematically added to original object wave phase and amplitude data of said spatially heterodyne hologram having spatially heterodyne fringes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {11}
}
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