Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1993-03-25
1995-06-06
Dzierzynski, Paul M.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369288, 359 2, 359 10, 365125, 365216, G11B 700
Patent
active
054228735
ABSTRACT:
New methods are presented for multiplexing volume holograms in electrooptic materials. Multiple volume holograms can be superimposed in a medium and be individually addressed by tuning the underlying refractive index of the medium or the crystal parameters, while keeping the external parameters (wavelength, angles) fixed. According to the presented methods, the refractive index and crystal parameters of the material can be varied via the electrooptic, elastooptic or piezoelectric effects, alone or in combination with each other, by tuning the value of an applied electric field, or by tuning an applied mechanical stress, or by changing the material temperature. Volume holograms that have been multiplexed by either wavelength or angle or electric field or mechanical stress or temperature can be individually addressed by any one of the same five parameters. Additionally, selective, updatable fixing and erasing of volume holograms in photorefractive media is described. Each holographic page may be fixed individually and overwritten without destroying the other fixed pages. Further, Second Harmonic Generation and Parametric Amplification by optically induced periodic poling in ferroelectric photorefractive materials is described.
REFERENCES:
patent: 3567305 (1971-03-01), Collier et al.
patent: 3627400 (1971-12-01), Caulfield
patent: 3652145 (1972-03-01), Thaxter
patent: 3847465 (1974-12-01), Micheron et al.
patent: 3940201 (1976-02-01), Micheron et al.
patent: 4076370 (1978-02-01), Wako
patent: 4120569 (1978-10-01), Richards, Jr.
patent: 4138189 (1979-02-01), Huignard et al.
patent: 4429954 (1984-02-01), Caulfield et al.
patent: 4505536 (1985-03-01), Huignard et al.
patent: 4636027 (1987-01-01), Dube
patent: 4655542 (1987-04-01), Dube
patent: 4927220 (1990-05-01), Hesselink et al.
patent: 4988153 (1991-01-01), Paek
patent: 5007690 (1991-04-01), Chern et al.
patent: 5111445 (1992-05-01), Psaltis et al.
patent: 5272550 (1993-12-01), Dickson et al.
Optics Communications, vol. 29, No. 1, Apr. 1979, pp. 44-47, "Light Diffraction From The Volume Holograms In Electrooptic Birefringent Crystals" by M. P. Patrov et al.
Applied Optics, vol. 29, No. 8, Mar. 10, 1990, pp. 1059-1061, "Use Of Photorefractive Fiber In Optical Interconnections And Switching" by Shudong Wu et al.
Applied Physics Letters, vol. 56, No. 2, Jan. 8, 1990, pp. 108-110, "Quasi-Phase-Matched Second-Harmonic Generation Of Blue Light In Periodically poled LiNbO.sub.3 " by G. A. Magel et al.
Applied Physics Letters, vol. 59, No. 21, Nov. 18, 1991, pp. 2657-2659, "Periodically Poled LiNbO.sub.3 For High-Efficiency Second-Harmonic Generation" by D. H. Jundt et al.
IEEE Journal Of Quantum Electronics, vol. 28, No. 11, Nov. 1992, pp. 2631-2654, "Quasi-Phase-Matched Second Harmonic Generation Tuning And Tolerances" by Martin M. Fejer et al.
Applied Physics Letters, vol. 20, No. 2, Jan. 15, 1972, pp. 79-81, "Electrical Control Of Fixation And Erasure Of Holographic Patterns In Ferroelectric Materials" by F. Micheron et al.
Soviet Physics-Crystallography, vol. 14, No. 6, May-Jun., 1970, pp. 894-896, "Effect Of Illumination On Polarization Reversal In The Ferroelectric Semiconductor SbSI Using The Barkhausen Effect" by A. A. Bogomolov et al.
Applied Physics Letters, vol. 18, No. 12, Jun. 15, 1971, pp. 540-542, "Holographic Pattern Fixing In Electro-Optic Crystals" by Juan J. Amodei et al.
Applied Physics Letters, vol. 28, No. 4, Feb. 15, 1976, pp. 224-226, "Mobile Si Ions In Fe-Doped LiNbO.sub.3 Crystals" by B. F. Williams et al.
Applied Physics Letters, vol. 49, No. 18, Nov. 3, 1986, pp. 1140-1142, "Hologram Fixing Process At Room Temperature In Photorefractive Bi.sub.12 SiO.sub.20 Crystals" by J. P. Herriau et al.
Applied Physics Letters, vol. 26, No. 1, Jan. 1, 1975, pp. 22-24, "High-Sensitivity Optical Recording In KTN By Two-Photon Absorption" by D. Von Der Linde et al.
"Kinetics Of Fixation Of Phase Holograms In LiNbO.sub.3 " by W. Meyer et al.
Optical Engineering, vol. 17, No. 4, Jul.-Aug., 1978, pp. 308-316, "Volume Phase Holographic Storage In Ferroelectric Crystals" by W. J. Burke et al.
Ferroelectrics, vol. 3, 1972, pp. 107-113, "Thermally Fixed Holograms In LiNbO.sub.3 " by D. L. Staebler et al.
Applied Physics Letter, vol. 26, No. 4, Feb. 15, 1975, pp. 182-184, "Multiple Storage And Erasure Of Fixed Holograms In Fe-Doped LiNbO.sub.3 " by D. L. Staebler et al.
Ferroelectrics, vol. 8, 1974, pp. 441-442, "PhotoInduced Phase Transitions In (Sr,Ba) Nb.sub.2 O.sub.6 Crystals And Applications" by F. Micheron et al.
Applied Optics, vol. 28, No. 11, Jun. 1, 1989, pp. 1967-1969, "Hologram Fixing In Bi.sub.12 TiO.sub.20 Using Heating And An AC Electric Field" by S. W. McCahon et al.
Optics Letters, vol. 16, No. 8, Apr. 15, 1991, pp. 554-556, "Fixing Of A Photorefractive Grating In KTa.sub.1-x Nb.sub.x O.sub.3 By Cooling Through The Ferroelectric Phase Transition" by Victor Leyva et al.
Applied Physics Letters, vol. 60, No. 26, Jun. 29, 1992, pp. 3212-3214, "Determination Of H. Concentration In LiNbO.sub.3 By Photorefractive Fixing" by R. Muller et al.
Applied Optics, vol. 13, No. 4, Apr., 1974, pp. 788-794, "Fe-Doped LiNbO.sub.3 For Read-Write Applications" by D. L. Staebler et al.
Soviet Physics-Doklady, vol. 10, No. 7, Jan., 1966, pp. 639-640, "Stepwise Polarization Reversal In Ferroelectric Crystals Caused By External Mechanical Stress" by L. A. Shuvalov et al.
Soviet Physics-Solid State, vol. 9, No. 11, May, 1968, pp. 2624-2625, "Polarization Discontinuities In Ferroelectric SbSI Caused By Illumination" by V. M. Rudyak et al.
"Spontaneous Polarization Reversal And Photorefractive Effect in Single-Domain Iron-Doped Lithium Niobate Crystals" by V. I. Kovalevich et al.
Applied Physics Letters, vol. 50, No. 3, Mar., 1979, pp. 1222-1225, "Tunable Multilayer Film Distributed-Gragg-Reflector Filter" by Mitsuteru Kimura et al.
Journal of the Optical Society of America, vol. 9, No. 7, Jul. 1992, pp. 1183-1192, "Multiplex Holography In Strontium Barium Niobate With Applied Field" by J. E. Ford et al.
Applied Optics, vol. 27, No. 8, Apr. 15, 1988, pp. 1603-1606, "Enhanced Optooptical Light Deflection Using Cavity Resonance" by William H. Steier et al.
Technical Digest Series, vol. 17, Aug. 12-14, 1987, pp. 155-158, "Fast Hologram Erasure In photorefractive Materials" by Gregory Kavounas et al.
Optics Letters, vol. 17, No. 20, Oct. 15, 1992, pp. 1471-1473, "Optical Data Storage By Using Orthogonal Wavelength-Multiplexed Volume Holograms" by George A. Rakuljic et al.
Applied Optics, vol. 2, No. 4, Apr., 1963, pp. 393-400, "Theory Of Optical Information Storage In Solids" by P. J. Van Heerden.
Applied Optics, vol. 13, No. 4, Apr., 1974, pp. 913-924, "Unique Properties of SBN And Their Use In A Layered Optical Memory" by J. B. Thaxter et al.
Optics & Photonics News, Aug., 1992, pp. 16-25, "Volume Hologram Optical Memories" by Richard G. Zech.
IEEE Photonics Technology Letters, vol. 4, No. 10, Oct., 1992, pp. 1115-1118, "Diffraction Characteristics Of Superimposed Holographic Gratings In Planar Optical Waveguides" by V. Minier et al.
Applied optics, vol. 13, No. 4, Apr., 1974, pp. 784-787, "Electrical Control In Photoferroelectric Materials For Optical Storage" by F. Micheron et al.
Optics Letters, vol. 17, No. 12, Jun. 15, 1992, pp. 853-855, "Electric-Field-Controlled Diffraction In Photorefractive Strontium Barium Niobate" by Jeffrey P. Wilde et al.
Applied Physics Letters, vol. 62, No. 5, Feb. 1, 1993, pp. 435-436, "First-Order Quasi-Phase Matched LiNbO.sub.3 Waveguide Periodically Poled By Applying An External Field For Efficient Field For Efficient Blue Second-Harmonic Generation" by M. Yamada et al.
Kewitsch Anthony S.
Segev Mordechai
Yariv Amnon
California Institute of Technology
Chu Kim-Kwok
Dzierzynski Paul M.
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