FR2362466A1 - Cellule d'enregistrement holographique, memoire et dispositif de calcul optique utilisant une telle cellule - Google Patents

Cellule d'enregistrement holographique, memoire et dispositif de calcul optique utilisant une telle cellule

Info

Publication number
FR2362466A1
FR2362466A1 FR7625231A FR7625231A FR2362466A1 FR 2362466 A1 FR2362466 A1 FR 2362466A1 FR 7625231 A FR7625231 A FR 7625231A FR 7625231 A FR7625231 A FR 7625231A FR 2362466 A1 FR2362466 A1 FR 2362466A1
Authority
FR
France
Prior art keywords
cell
memory
calculation device
holographic recording
optical calculation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7625231A
Other languages
English (en)
Inventor
Jean-Pierre Huignard
Jean-Pierre Herriau
Francois Micheron
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7625231A priority Critical patent/FR2362466A1/fr
Priority to US05/812,599 priority patent/US4138189A/en
Publication of FR2362466A1 publication Critical patent/FR2362466A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • G11C13/042—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using information stored in the form of interference pattern
    • G11C13/044—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using information stored in the form of interference pattern using electro-optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/0338—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect structurally associated with a photoconductive layer or having photo-refractive properties
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H2001/026—Recording materials or recording processes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2260/00—Recording materials or recording processes
    • G03H2260/50—Reactivity or recording processes
    • G03H2260/54—Photorefractive reactivity wherein light induces photo-generation, redistribution and trapping of charges then a modification of refractive index, e.g. photorefractive polymer

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Holo Graphy (AREA)

Abstract

L'invention concerne les cellules qui permettent d'enregistrer des hologrammes dans un milieu sensible sans intervention d'un procédé chimique de type photographique. Elle consiste à utiliser une lame d'un matériau choisi parmi Bi12 SiO20 et Bi12 Ge O20 et à soumettre cette lame à un champ électrique transversal, perpendiculaire aux franges de l'hologramme à inscrire et parallèle à un axe cristallin privilégié. Elle permet de réaliser des mémoires holographiques du type à pages, dont le contenu peut être aisément modifié.
FR7625231A 1976-08-19 1976-08-19 Cellule d'enregistrement holographique, memoire et dispositif de calcul optique utilisant une telle cellule Withdrawn FR2362466A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7625231A FR2362466A1 (fr) 1976-08-19 1976-08-19 Cellule d'enregistrement holographique, memoire et dispositif de calcul optique utilisant une telle cellule
US05/812,599 US4138189A (en) 1976-08-19 1977-07-01 Holography using a Bi12 SiO or Bi12 GeO20 recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7625231A FR2362466A1 (fr) 1976-08-19 1976-08-19 Cellule d'enregistrement holographique, memoire et dispositif de calcul optique utilisant une telle cellule

Publications (1)

Publication Number Publication Date
FR2362466A1 true FR2362466A1 (fr) 1978-03-17

Family

ID=9177009

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7625231A Withdrawn FR2362466A1 (fr) 1976-08-19 1976-08-19 Cellule d'enregistrement holographique, memoire et dispositif de calcul optique utilisant une telle cellule

Country Status (2)

Country Link
US (1) US4138189A (fr)
FR (1) FR2362466A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449301A1 (fr) * 1979-02-16 1980-09-12 Thomson Csf Dispositif optique de copie d'objets plans
FR2468947A1 (fr) * 1979-11-05 1981-05-08 Thomson Csf Systeme de correlation optique en temps reel
EP0058592A1 (fr) * 1981-02-06 1982-08-25 Thomson-Csf Dispositif optique transformateur de Fourier, et corrélateur optique mettant en oeuvre ce dispositif optique transformateur de Fourier
FR2501872A1 (fr) * 1981-03-13 1982-09-17 Thomson Csf Dispositif optique d'amplification en temps reel de l'energie radiante d'un faisceau
EP0075180A2 (fr) * 1981-09-22 1983-03-30 Sumitomo Electric Industries Limited Guide d'ondes holographique
FR2528993A1 (fr) * 1982-06-18 1983-12-23 Thomson Csf Dispositif d'eclairement d'un milieu electro-optique pour enregistrer des hologrammes en temps reel

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385079A1 (fr) * 1977-03-23 1978-10-20 Thomson Csf Dispositif de visualisation, par interferometrie holographique, des deformations de structures deformables
FR2395534A1 (fr) * 1977-06-24 1979-01-19 Thomson Csf Dispositif d'imagerie acousto-optique a detection holographique coherente en temps reel
US4255009A (en) * 1979-07-30 1981-03-10 Amp Incorporated Two row electrical connector
US4318581A (en) * 1980-05-13 1982-03-09 Georgia Tech Research Institute Optical holographic content-addressable memory system for truth table look-up processing
US4927220A (en) * 1987-12-31 1990-05-22 Microelectronic & Computer Technology Corp. System and method for photorefractive holographic recording and signal processing
US5039182A (en) * 1989-10-23 1991-08-13 International Business Machines Corporation Storing information in dual holographic images
US5422873A (en) * 1993-03-25 1995-06-06 California Institute Of Technology Multiplexing and selective updatable fixing and erasing of volume holograms in photorefractive media and second harmonic generation in photorefractive media by optically induced periodic poling
US5377176A (en) * 1993-07-14 1994-12-27 Tamarack Storage Devices Method and apparatus for isolating data storage regions in a thick holographic storage media
US5481523A (en) * 1993-12-23 1996-01-02 Tamarack Storage Devices Gantry for positioning a read/write head of a holographic information storage system
US5566387A (en) * 1993-12-23 1996-10-15 Tamarack Storage Devices Diamond shaped holographic storage regions oriented along a common radial column line for higher storage density
US5694488A (en) * 1993-12-23 1997-12-02 Tamarack Storage Devices Method and apparatus for processing of reconstructed holographic images of digital data patterns
US5691829A (en) * 1994-03-08 1997-11-25 Technion Research & Development Foundation Ltd. Method for fixing optical information in crystals and for quasi-phase matching in frequency mixing
US5883880A (en) * 1994-06-15 1999-03-16 Tamarack Storage Devices Disk positioning device for defining precise radial location
FR2727215B1 (fr) * 1994-11-18 1996-12-20 Thomson Csf Dispositif de veille panoramique infrarouge statique a detecteurs matriciels multiples
US6088139A (en) * 1995-08-31 2000-07-11 Ngk Insulators, Ltd. Method and an apparatus for recording and reproducing using a hologram, an apparatus for irradiating light for reproduction to a hologram, a hologram device and a manufacturing method of the same
US5905584A (en) * 1995-12-26 1999-05-18 Ngk Insulators, Ltd. Hologram recording and reproducing apparatus
FR2750487B1 (fr) * 1996-06-28 2005-10-21 Thomson Csf Revetement pour la protection personnelle d'un fantassin
US5877873A (en) * 1996-07-24 1999-03-02 Bashaw; Matthew C. Differential video image compression in holographic media
FR2755516B1 (fr) 1996-11-05 1999-01-22 Thomson Csf Dispositif compact d'illumination
US6020985A (en) * 1998-01-30 2000-02-01 Siros Technologies, Inc. Multilayer reflection microhologram storage in tape media
US6212148B1 (en) * 1998-01-30 2001-04-03 Siros Technologies, Inc. Optical data storage by selective localized alteration of a format hologram
US6147782A (en) 1998-05-01 2000-11-14 Siros Technologies, Inc. Positive unit magnification reflective optics for holographic storage
US6322933B1 (en) 1999-01-12 2001-11-27 Siros Technologies, Inc. Volumetric track definition for data storage media used to record data by selective alteration of a format hologram
US6310850B1 (en) 1999-07-29 2001-10-30 Siros Technologies, Inc. Method and apparatus for optical data storage and/or retrieval by selective alteration of a holographic storage medium
US6322931B1 (en) 1999-07-29 2001-11-27 Siros Technologies, Inc. Method and apparatus for optical data storage using non-linear heating by excited state absorption for the alteration of pre-formatted holographic gratings
US6512606B1 (en) 1999-07-29 2003-01-28 Siros Technologies, Inc. Optical storage media and method for optical data storage via local changes in reflectivity of a format grating
FR2819061B1 (fr) * 2000-12-28 2003-04-11 Thomson Csf Dispositif de controle de polarisation dans une liaison optique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3652145A (en) * 1969-06-30 1972-03-28 Sperry Rand Corp Electrically controllable volume holographic apparatus and method for operating said apparatus
FR2153140B1 (fr) * 1971-09-20 1974-05-31 Thomson Csf
FR2233645B1 (fr) * 1973-05-29 1976-04-23 Thomson Csf
US3935441A (en) * 1974-01-02 1976-01-27 Itek Corporation Apparatus for maintaining image digitization in parallel optical digital processing systems

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449301A1 (fr) * 1979-02-16 1980-09-12 Thomson Csf Dispositif optique de copie d'objets plans
FR2468947A1 (fr) * 1979-11-05 1981-05-08 Thomson Csf Systeme de correlation optique en temps reel
EP0028548A1 (fr) * 1979-11-05 1981-05-13 Thomson-Csf Système de correlation optique en temps réel
US4383734A (en) * 1979-11-05 1983-05-17 Thomson-Csf Real-time optical correlation system
EP0058592A1 (fr) * 1981-02-06 1982-08-25 Thomson-Csf Dispositif optique transformateur de Fourier, et corrélateur optique mettant en oeuvre ce dispositif optique transformateur de Fourier
US4514038A (en) * 1981-02-06 1985-04-30 Thomson-Csf Optical Fourier transformer device and optical correlator incorporating the said device
FR2501872A1 (fr) * 1981-03-13 1982-09-17 Thomson Csf Dispositif optique d'amplification en temps reel de l'energie radiante d'un faisceau
US4505536A (en) * 1981-03-13 1985-03-19 Thomson-Csf Optical device for real-time amplification of the radiant energy of a beam
EP0075180A2 (fr) * 1981-09-22 1983-03-30 Sumitomo Electric Industries Limited Guide d'ondes holographique
EP0075180A3 (en) * 1981-09-22 1986-05-14 Sumitomo Electric Industries Limited Holographic light guide
FR2528993A1 (fr) * 1982-06-18 1983-12-23 Thomson Csf Dispositif d'eclairement d'un milieu electro-optique pour enregistrer des hologrammes en temps reel
EP0098185A1 (fr) * 1982-06-18 1984-01-11 Thomson-Csf Dispositif d'éclairement d'un milieu électro-optique pour enregistrer des hologrammes en temps réel

Also Published As

Publication number Publication date
US4138189A (en) 1979-02-06

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