GB1363130A – Optical stores using coherent light
– Google Patents
GB1363130A – Optical stores using coherent light
– Google Patents
Optical stores using coherent light
Info
Publication number
GB1363130A
GB1363130A
GB3179171A
GB3179171A
GB1363130A
GB 1363130 A
GB1363130 A
GB 1363130A
GB 3179171 A
GB3179171 A
GB 3179171A
GB 3179171 A
GB3179171 A
GB 3179171A
GB 1363130 A
GB1363130 A
GB 1363130A
Authority
GB
United Kingdom
Prior art keywords
coherent light
mirror
optical
electron beam
film
Prior art date
1970-07-14
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.)
Expired
Application number
GB3179171A
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.)
Siemens AG
Original Assignee
Siemens AG
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.)
1970-07-14
Filing date
1971-07-07
Publication date
1974-08-14
1971-07-07
Application filed by Siemens AG
filed
Critical
Siemens AG
1974-08-14
Publication of GB1363130A
publication
Critical
patent/GB1363130A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
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
H01S3/101—Lasers provided with means to change the location from which, or the direction in which, laser radiation is emitted
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
G11C13/041—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 photochromic storage elements
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
G11C13/048—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 other optical storage elements
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
H01J29/14—Screens on or from which an image or pattern is formed, picked up, converted or stored acting by discoloration, e.g. halide screen
Abstract
1363130 Modulating light SIEMENS AG 7 July 1971 [14 July 1970] 31791/71 Heading H4F [Also in Division H1] An optical store comprises a coherent light optical system arranged to project coherent light on to a storage medium that is not optically active but whose optical transparency can be locally and reversibly modified by an electron beam, means being provided to control the direction and intensity of the beam. The storage medium may be an alkali halide or a thin semi-conductor film of high absorption which may be cancelled in certain spectral ranges by saturation induced by electron incidence and may be a Ga, As, P mix, e.g. GaAs (1-x) P x of thickness 0À3 to 3 Á. Auxiliary sources may erase and sensitize respectively. Volumetric and/or surface conductivity may be such as to reduce charge formation, and electrodes may dissipate charges produced by the electron beam. Mirror Sp may be provided (Fig. 2, not shown) for both types, and Fig. 3 (not shown) includes variable transparency optical filter SM of semi-conductor type, 2 mirrors Sp1 and Sp, lenses 0, laser M, and electron beam Es controlling film SM to render mirror Sp effect only at point of impact. SM may itself simultaneously act as an additional laser amplifier material. Windows F are at the Brewster angle, and edge electrodes e provide rapid charge balancing. Output may be via mirror Sp1 or Sp. Fig. 4 (not shown) includes flange k, with closure plate Tr with film SM detachably secured by screws (not shown), sealing ring d, coherent light Ls passing through window F at the Brewster angle, movable plate Kp movable by a magnetic device for example to create an air-lock for the beam generator Ee for target replacement, ion gettering pump IP, first stage pump VP. If the store is long term, an auxiliary radiation source may erase and also a further source may sensitize. The medium SM may be of either types described w.r.t. Figs. 1 and 2.
GB3179171A
1970-07-14
1971-07-07
Optical stores using coherent light
Expired
GB1363130A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE19702034904
DE2034904A1
(en)
1970-07-14
1970-07-14
Optical memory for coherent optical systems
Publications (1)
Publication Number
Publication Date
GB1363130A
true
GB1363130A
(en)
1974-08-14
Family
ID=5776739
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3179171A
Expired
GB1363130A
(en)
1970-07-14
1971-07-07
Optical stores using coherent light
Country Status (8)
Country
Link
US
(1)
US3761159A
(en)
BE
(1)
BE769934A
(en)
DE
(1)
DE2034904A1
(en)
FR
(1)
FR2103019A5
(en)
GB
(1)
GB1363130A
(en)
IT
(1)
IT938769B
(en)
LU
(1)
LU63511A1
(en)
NL
(1)
NL7109725A
(en)
Families Citing this family (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4101976A
(en)
*
1977-02-14
1978-07-18
International Business Machines Corporation
Frequency selective optical data storage system
US4183094A
(en)
*
1978-03-20
1980-01-08
Xerox Corporation
Optical storage medium using the frequency domain
Family Cites Families (11)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2281637A
(en)
*
1938-04-02
1942-05-05
Thomas W Sukumlyn
Cathode ray television receiver
US2418779A
(en)
*
1942-07-22
1947-04-08
Rca Corp
Alkali metal halide and luminescent screens of substantially coincident spectral absorption
US3030505A
(en)
*
1956-01-31
1962-04-17
Atomic Energy Authority Uk
Mass spectrometers
US3176906A
(en)
*
1962-08-23
1965-04-06
Ca Nat Research Council
Ion pump
US3296594A
(en)
*
1963-06-14
1967-01-03
Polaroid Corp
Optical associative memory
US3365543A
(en)
*
1963-09-04
1968-01-23
Hitachi Ltd
Thermoplastic recording apparatus for television signals
US3379998A
(en)
*
1964-07-09
1968-04-23
Jack A. Soules
Laser image amplifying system
US3500237A
(en)
*
1967-01-13
1970-03-10
Ibm
Mode coupling laser apparatus
US3639854A
(en)
*
1968-11-22
1972-02-01
Corning Glass Works
Electron beam scanlaser having photochromic q-spoiler
US3623027A
(en)
*
1969-04-03
1971-11-23
Texas Instruments Inc
Solid-state light-sensitive storage device
US3626320A
(en)
*
1970-10-05
1971-12-07
Ibm
Image display apparatus
1970
1970-07-14
DE
DE19702034904
patent/DE2034904A1/en
active
Pending
1971
1971-06-30
US
US00158440A
patent/US3761159A/en
not_active
Expired – Lifetime
1971-07-07
GB
GB3179171A
patent/GB1363130A/en
not_active
Expired
1971-07-08
IT
IT26693/71A
patent/IT938769B/en
active
1971-07-12
LU
LU63511D
patent/LU63511A1/xx
unknown
1971-07-13
BE
BE769934A
patent/BE769934A/en
unknown
1971-07-13
FR
FR7125613A
patent/FR2103019A5/fr
not_active
Expired
1971-07-14
NL
NL7109725A
patent/NL7109725A/xx
unknown
Also Published As
Publication number
Publication date
BE769934A
(en)
1971-11-16
NL7109725A
(en)
1972-01-18
US3761159A
(en)
1973-09-25
DE2034904A1
(en)
1972-01-27
IT938769B
(en)
1973-02-10
LU63511A1
(en)
1971-11-16
FR2103019A5
(en)
1972-04-07
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Legal Events
Date
Code
Title
Description
1974-12-27
PS
Patent sealed [section 19, patents act 1949]
1976-02-11
PLNP
Patent lapsed through nonpayment of renewal fees
