Optical: systems and elements – Holographic system or element – Having particular recording medium
Patent
1998-08-11
2000-02-08
Spyrou, Cassandra
Optical: systems and elements
Holographic system or element
Having particular recording medium
359 1, 359 10, 359 27, 430 1, 430 2, G03H 102
Patent
active
060233524
ABSTRACT:
The invention features methods and systems for thermally fixing or erasing a laser-induced hologram in a photorefractive material, for example, by directing laser radiation having a wavelength through a thickness of the photorefractive material containing the hologram, wherein the wavelength is selected such that the photorefractive material absorbs a portion of the laser radiation and transmits another portion of the laser radiation. The transmitted laser radiation can be redirected back through the hologram, wherein both the laser radiation directed and redirected to the hologram are sufficiently absorbed by the photorefractive material to thermally fix or erase the hologram.
REFERENCES:
patent: 5335098 (1994-08-01), Leyva et al.
patent: 5648856 (1997-07-01), Stoll
Amondei et al., "Holographic Pattern Fixing in Electro-optic Crystals," Applied Physics Letters, 18:540-542, Jun. 15, 1971.
Heanaue et al., "Digital Holographic Storage System Incorporating Thermal Fixing in Lithium Niobate," Optics Letters, 21:1615-1617, Oct. 1, 1996.
Liu et al., "Local Thermal Fixing of a Photorefractive LiNbO.sub.3 Hologram by Use of a CO.sub.2 Laser," Applied Optics, 37:1342-1349, Mar. 10, 1998.
Nassau et al., "Ferroelectric Lithium Niobate. 2. Preparation of Single Domain Crystals," J. Phys. Chem. Solids, 27:989-996, Oct. 5, 1965.
Rybaltowski et al., "High Power InAsSb/InPAsSb/InAs Mid-Infrared Lasers," Applied Phys. Lett., 71:2430-2432, Oct. 27, 1997.
Staebler et al., "Multiple Storage and Erasure of Fixed Holograms in Fe-doped LiNbO.sub.3," Applied Phys. Lett., 26:82-184, Feb. 15, 1975.
Curtis Craig
Spyrou Cassandra
University of Massachusetts
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