CH382226A - Dispositif magnéto-optique, notamment pour l'emmagasinage et la lecture de données et la modulation d'ondes électromagnétiques - Google Patents
Dispositif magnéto-optique, notamment pour l'emmagasinage et la lecture de données et la modulation d'ondes électromagnétiquesInfo
- Publication number
- CH382226A CH382226A CH582862A CH582862A CH382226A CH 382226 A CH382226 A CH 382226A CH 582862 A CH582862 A CH 582862A CH 582862 A CH582862 A CH 582862A CH 382226 A CH382226 A CH 382226A
- Authority
- CH
- Switzerland
- Prior art keywords
- magneto
- storing
- optical device
- electromagnetic waves
- reading data
- Prior art date
Links
Classifications
-
- 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
- G02F1/09—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 magneto-optical elements, e.g. exhibiting Faraday effect
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
- G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
- G11B11/10589—Details
- G11B11/10593—Details for improving read-out properties, e.g. polarisation of light
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
-
- 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
- G11C13/06—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 magneto-optical elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US111231A US3224333A (en) | 1961-05-19 | 1961-05-19 | Magneto-optic device employing reflective layer to provide increased kerr rotation |
Publications (1)
Publication Number | Publication Date |
---|---|
CH382226A true CH382226A (fr) | 1964-09-30 |
Family
ID=22337294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH582862A CH382226A (fr) | 1961-05-19 | 1962-05-15 | Dispositif magnéto-optique, notamment pour l'emmagasinage et la lecture de données et la modulation d'ondes électromagnétiques |
Country Status (7)
Country | Link |
---|---|
US (1) | US3224333A (fr) |
CH (1) | CH382226A (fr) |
DE (1) | DE1275604C2 (fr) |
DK (1) | DK105673C (fr) |
GB (1) | GB934920A (fr) |
NL (2) | NL134538C (fr) |
SE (1) | SE317711B (fr) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3393957A (en) * | 1964-03-02 | 1968-07-23 | Massachusetts Inst Technology | High-frequency light modulator or switch using the magneto-optical properties of thin magnetic films |
US3422269A (en) * | 1964-04-10 | 1969-01-14 | Honeywell Inc | Resonant kerr effect electromagnetic wave modulators |
US3427092A (en) * | 1964-06-22 | 1969-02-11 | Massachusetts Inst Technology | Thin film high frequency light modulator using transverse magneto-optical effect |
US3451740A (en) * | 1965-04-19 | 1969-06-24 | Massachusetts Inst Technology | Magneto-optical light switch enhanced by optical impedance matching dielectric overlayers |
US3418483A (en) * | 1966-04-08 | 1968-12-24 | Ibm | Enhanced faraday rotation structure |
US3472575A (en) * | 1966-11-04 | 1969-10-14 | Ampex | Magnetic storage medium for enhancing magneto-optic readout |
US3701133A (en) * | 1967-05-05 | 1972-10-24 | Philip Smaller | Modulated magnetooptic readout system |
US3522090A (en) * | 1967-11-13 | 1970-07-28 | Du Pont | Reflex thermomagnetic recording members |
US3545840A (en) * | 1968-07-29 | 1970-12-08 | Magnavox Co | Enhanced transverse kerr magneto-optical transducer |
US3571583A (en) * | 1968-09-30 | 1971-03-23 | Us Navy | Multichannel |
US3651281A (en) * | 1969-06-06 | 1972-03-21 | Carl H Becker | Laser recording system using photomagnetically magnetizable storage medium |
DE1930907C3 (de) * | 1969-06-18 | 1974-04-11 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | Magneto-optisches Speicherelement |
US3651504A (en) * | 1969-10-17 | 1972-03-21 | Sperry Rand Corp | Magneto-optic information storage apparatus |
US3868651A (en) * | 1970-08-13 | 1975-02-25 | Energy Conversion Devices Inc | Method and apparatus for storing and reading data in a memory having catalytic material to initiate amorphous to crystalline change in memory structure |
US3696352A (en) * | 1970-11-25 | 1972-10-03 | Robatron Veb K | Magneto-optical readout beam shifted as a function of information |
US3739362A (en) * | 1971-03-25 | 1973-06-12 | Magnavox Co | Magneto-optical signal processor |
US3770335A (en) * | 1971-07-01 | 1973-11-06 | Gen Dynamics Corp | Composite magnetic mirror and method of forming same |
SU400139A1 (ru) * | 1971-07-07 | 1974-02-25 | Фонд вноертш | |
JPS5545166A (en) * | 1978-09-25 | 1980-03-29 | Matsushita Electric Ind Co Ltd | Recording and reproducing method for optical information |
NL8203725A (nl) * | 1982-09-27 | 1984-04-16 | Philips Nv | Thermo-magneto-optische geheugeninrichting en registratiemedium daarvoor. |
US4569881A (en) * | 1983-05-17 | 1986-02-11 | Minnesota Mining And Manufacturing Company | Multi-layer amorphous magneto optical recording medium |
JPH03219450A (ja) * | 1989-11-13 | 1991-09-26 | Hitachi Maxell Ltd | 光磁気記録媒体 |
JP2822531B2 (ja) * | 1990-01-29 | 1998-11-11 | ブラザー工業株式会社 | 光磁気記録媒体及び光磁気記録・消去方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2884337A (en) * | 1955-06-03 | 1959-04-28 | Ohio Commw Eng Co | Method for making metallized plastic films |
NL233342A (fr) * | 1957-11-18 |
-
0
- NL NL278562D patent/NL278562A/xx unknown
-
1961
- 1961-05-19 US US111231A patent/US3224333A/en not_active Expired - Lifetime
-
1962
- 1962-04-25 GB GB15678/62A patent/GB934920A/en not_active Expired
- 1962-05-15 CH CH582862A patent/CH382226A/fr unknown
- 1962-05-17 NL NL134538D patent/NL134538C/xx active
- 1962-05-17 DK DK225062AA patent/DK105673C/da active
- 1962-05-18 SE SE5616/62A patent/SE317711B/xx unknown
- 1962-05-19 DE DE1962N0021606 patent/DE1275604C2/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL278562A (fr) | |
DE1275604B (de) | 1968-08-22 |
DE1275604C2 (de) | 1969-04-24 |
NL134538C (nl) | 1972-02-15 |
GB934920A (en) | 1963-08-21 |
SE317711B (fr) | 1969-11-24 |
US3224333A (en) | 1965-12-21 |
DK105673C (da) | 1966-10-24 |
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