FR2420188A1 - Recording device for optical information - comprises material sensitive to radiation of below 1.2 microns wavelength on a support - Google Patents

Recording device for optical information - comprises material sensitive to radiation of below 1.2 microns wavelength on a support

Info

Publication number
FR2420188A1
FR2420188A1 FR7807609A FR7807609A FR2420188A1 FR 2420188 A1 FR2420188 A1 FR 2420188A1 FR 7807609 A FR7807609 A FR 7807609A FR 7807609 A FR7807609 A FR 7807609A FR 2420188 A1 FR2420188 A1 FR 2420188A1
Authority
FR
France
Prior art keywords
radiation
support
recording device
sensitive
optical information
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.)
Granted
Application number
FR7807609A
Other languages
French (fr)
Other versions
FR2420188B1 (en
Inventor
Jean Cornet
Michel Steers
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.)
Laboratoires dElectronique Philips SAS
Original Assignee
Laboratoires dElectronique et de Physique Appliquee
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 Laboratoires dElectronique et de Physique Appliquee filed Critical Laboratoires dElectronique et de Physique Appliquee
Priority to FR7807609A priority Critical patent/FR2420188A1/en
Publication of FR2420188A1 publication Critical patent/FR2420188A1/en
Application granted granted Critical
Publication of FR2420188B1 publication Critical patent/FR2420188B1/fr
Granted 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/705—Compositions containing chalcogenides, metals or alloys thereof, as photosensitive substances, e.g. photodope systems
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24306—Metals or metalloids transition metal elements of groups 3-10
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/2431—Metals or metalloids group 13 elements (B, Al, Ga, In)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24312—Metals or metalloids group 14 elements (e.g. Si, Ge, Sn)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)

Abstract

Optical information recording device comprise a material sensitive to radiation of wavelength 1.2 mu deposited in a thin layer on a support. The recording of the information is effected by local photothermal ablation of the material under the action of a surface energy density of the order of 5-40 mJ/cm.2, such information can be read directly after recording without subsequent treatment. Specifically, the sensitive material is a vitreous alloy of Te with one or more gp. IIIB, IVB and VB elements. Claimed compsns. comprises 5-60 (15-30) esp. 22% Ge, 40-95 (70-85) esp. 78% Te, the Ge being (partially) replaceable by one or more of Si, Al, Ga, P and As. The material is sensitive to radiation throughout the wavelength range 300 nm. to 1.2 mu.
FR7807609A 1978-03-16 1978-03-16 Recording device for optical information - comprises material sensitive to radiation of below 1.2 microns wavelength on a support Granted FR2420188A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7807609A FR2420188A1 (en) 1978-03-16 1978-03-16 Recording device for optical information - comprises material sensitive to radiation of below 1.2 microns wavelength on a support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7807609A FR2420188A1 (en) 1978-03-16 1978-03-16 Recording device for optical information - comprises material sensitive to radiation of below 1.2 microns wavelength on a support

Publications (2)

Publication Number Publication Date
FR2420188A1 true FR2420188A1 (en) 1979-10-12
FR2420188B1 FR2420188B1 (en) 1982-01-15

Family

ID=9205876

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7807609A Granted FR2420188A1 (en) 1978-03-16 1978-03-16 Recording device for optical information - comprises material sensitive to radiation of below 1.2 microns wavelength on a support

Country Status (1)

Country Link
FR (1) FR2420188A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046412A1 (en) * 1980-08-20 1982-02-24 Hitachi, Ltd. Recording member
EP0195532A1 (en) * 1985-02-22 1986-09-24 Asahi Kasei Kogyo Kabushiki Kaisha An information recording medium
EP0260921A2 (en) * 1986-09-15 1988-03-23 EASTMAN KODAK COMPANY (a New Jersey corporation) Erasable optical recording method
EP0412362A2 (en) * 1989-08-07 1991-02-13 BASF Aktiengesellschaft Optical recording medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2439848A1 (en) * 1973-08-20 1975-03-06 Canon Kk RECORDING MATERIAL FOR LASER RAYS AND RECORDING METHODS
US3988720A (en) * 1970-08-13 1976-10-26 Energy Conversion Devices, Inc. Recording and retrieving information in an amorphous memory material using a catalytic material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988720A (en) * 1970-08-13 1976-10-26 Energy Conversion Devices, Inc. Recording and retrieving information in an amorphous memory material using a catalytic material
DE2439848A1 (en) * 1973-08-20 1975-03-06 Canon Kk RECORDING MATERIAL FOR LASER RAYS AND RECORDING METHODS

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046412A1 (en) * 1980-08-20 1982-02-24 Hitachi, Ltd. Recording member
EP0195532A1 (en) * 1985-02-22 1986-09-24 Asahi Kasei Kogyo Kabushiki Kaisha An information recording medium
EP0260921A2 (en) * 1986-09-15 1988-03-23 EASTMAN KODAK COMPANY (a New Jersey corporation) Erasable optical recording method
EP0260921A3 (en) * 1986-09-15 1989-07-26 Eastman Kodak Company Erasable optical recording method
EP0412362A2 (en) * 1989-08-07 1991-02-13 BASF Aktiengesellschaft Optical recording medium
EP0412362A3 (en) * 1989-08-07 1992-04-22 Basf Aktiengesellschaft Optical recording medium

Also Published As

Publication number Publication date
FR2420188B1 (en) 1982-01-15

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Legal Events

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