BE831647A - Dispositif pour la transformation directe d'informations memorisees magnetiquement en signaux optiques - Google Patents

Dispositif pour la transformation directe d'informations memorisees magnetiquement en signaux optiques

Info

Publication number
BE831647A
BE831647A BE158533A BE158533A BE831647A BE 831647 A BE831647 A BE 831647A BE 158533 A BE158533 A BE 158533A BE 158533 A BE158533 A BE 158533A BE 831647 A BE831647 A BE 831647A
Authority
BE
Belgium
Prior art keywords
optical signals
stored information
direct transformation
magnetically stored
magnetically
Prior art date
Application number
BE158533A
Other languages
English (en)
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 filed Critical
Publication of BE831647A publication Critical patent/BE831647A/fr

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
    • G02F1/095—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 in an optical waveguide structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/0632—Thin film lasers in which light propagates in the plane of the thin film
    • H01S3/0635—Thin film lasers in which light propagates in the plane of the thin film provided with a periodic structure, e.g. using distributed feed-back, grating couplers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
    • H01S3/0933—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light of a semiconductor, e.g. light emitting diode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/1066—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using a magneto-optical device
BE158533A 1974-07-23 1975-07-23 Dispositif pour la transformation directe d'informations memorisees magnetiquement en signaux optiques BE831647A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2435415A DE2435415A1 (de) 1974-07-23 1974-07-23 Anordnung zur direkten umwandlung magnetisch gespeicherter informationen in optische signale

Publications (1)

Publication Number Publication Date
BE831647A true BE831647A (fr) 1975-11-17

Family

ID=5921303

Family Applications (1)

Application Number Title Priority Date Filing Date
BE158533A BE831647A (fr) 1974-07-23 1975-07-23 Dispositif pour la transformation directe d'informations memorisees magnetiquement en signaux optiques

Country Status (8)

Country Link
US (1) US4037263A (fr)
JP (1) JPS5136965A (fr)
BE (1) BE831647A (fr)
DE (1) DE2435415A1 (fr)
FR (1) FR2280166A1 (fr)
GB (1) GB1511894A (fr)
IT (1) IT1039915B (fr)
NL (1) NL7507107A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136350A (en) * 1977-07-14 1979-01-23 Bell Telephone Laboratories, Incorporated Epitaxial growth of dissimilar materials
JPS5459915A (en) * 1977-10-20 1979-05-15 Sony Corp Method and apparatus for reading of magnetic recording signal
JPS59223966A (ja) * 1983-06-01 1984-12-15 Seiko Instr & Electronics Ltd 光磁気デイスク
DE3520991A1 (de) * 1985-06-12 1986-12-18 Philips Patentverwaltung Gmbh, 2000 Hamburg Magneto-optische wellenleiterstruktur zur konversion von in der struktur gefuehrten moden
US4899042A (en) * 1987-11-17 1990-02-06 The Boeing Company Integrated optic field sensor consisting of an interferometer formed in substrate
BR112017003233A2 (pt) * 2015-07-09 2017-11-28 Koninklijke Philips Nv detector de radiação de conversão direta, método de imageamento por radiação, e sistema de imageamento
US11418008B2 (en) * 2019-03-20 2022-08-16 Electronics And Telecommunications Research Institute Laser device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250543B2 (fr) * 1972-02-28 1977-12-24
US3868589A (en) * 1972-10-10 1975-02-25 Univ California Thin film devices and lasers

Also Published As

Publication number Publication date
DE2435415A1 (de) 1976-02-05
FR2280166B1 (fr) 1977-12-09
NL7507107A (nl) 1976-01-27
IT1039915B (it) 1979-12-10
GB1511894A (en) 1978-05-24
FR2280166A1 (fr) 1976-02-20
US4037263A (en) 1977-07-19
JPS5136965A (en) 1976-03-29

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