GB2138585B - Faraday rotator - Google Patents

Faraday rotator

Info

Publication number: GB2138585B
Authority: GB; United Kingdom
Prior art keywords: faraday rotator; faraday; rotator
Prior art date: 1980-10-17
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

GB08333405A

Other versions

GB8333405D0 (en

GB2138585A (en

Inventor

Irl W Smith

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.)

Raytheon Co

Original Assignee

Raytheon Co

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.)

1980-10-17

Filing date

1983-12-15

Publication date

1985-06-05

1983-12-15 Application filed by Raytheon Co filed Critical Raytheon Co

1984-01-25 Publication of GB8333405D0 publication Critical patent/GB8333405D0/en

1984-10-24 Publication of GB2138585A publication Critical patent/GB2138585A/en

1985-06-05 Application granted granted Critical

1985-06-05 Publication of GB2138585B publication Critical patent/GB2138585B/en

Status Expired legal-status Critical Current

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
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
- G01C19/66—Ring laser gyrometers
- G01C19/667—Ring laser gyrometers using a multioscillator ring laser
- 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
- G02F1/093—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 used as non-reciprocal devices, e.g. optical isolators, circulators
- 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
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
- H01S3/083—Ring lasers

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Optics & Photonics (AREA)
Nonlinear Science (AREA)
Power Engineering (AREA)
General Physics & Mathematics (AREA)
Electromagnetism (AREA)
Radar, Positioning & Navigation (AREA)
Remote Sensing (AREA)
Plasma & Fusion (AREA)
Gyroscopes (AREA)
Lasers (AREA)

GB08333405A 1980-10-17 1983-12-15 Faraday rotator Expired GB2138585B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US19787080A	1980-10-17	1980-10-17

Publications (3)

Publication Number	Publication Date
GB8333405D0 GB8333405D0 (en)	1984-01-25
GB2138585A GB2138585A (en)	1984-10-24
GB2138585B true GB2138585B (en)	1985-06-05

Family

ID=22731072

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
GB8131273A Expired GB2087638B (en)	1980-10-17	1981-10-16	Ring laser gyroscope
GB08333405A Expired GB2138585B (en)	1980-10-17	1983-12-15	Faraday rotator

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
GB8131273A Expired GB2087638B (en)	1980-10-17	1981-10-16	Ring laser gyroscope

Country Status (7)

Country	Link
JP (1)	JPS5796581A (en)
CA (1)	CA1189600A (en)
DE (1)	DE3141175C2 (en)
FR (1)	FR2492522B1 (en)
GB (2)	GB2087638B (en)
IT (1)	IT1142901B (en)
NL (1)	NL8104726A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2120839A (en) *	1982-05-19	1983-12-07	Raytheon Co	Ring laser gyroscope
US4616930A (en) *	1983-04-20	1986-10-14	Litton Systems, Inc.	Optically biased twin ring laser gyroscope
US4652132A (en) *	1983-11-07	1987-03-24	Raytheon Company	Optical power compensated ring laser gyroscope
GB2184285B (en) *	1983-11-07	1990-08-01	Raytheon Co	Ring laser gyroscope
US4578793A (en) *	1984-07-13	1986-03-25	The Board Of Trustees Of The Leland Stanford Junior University	Solid-state non-planar internally reflecting ring laser
SE453258B (en) *	1986-04-21	1988-01-25	Medinvent Sa	ELASTIC, SELF-EXPANDING PROTEST AND PROCEDURE FOR ITS MANUFACTURING
US5080487A (en) *	1986-11-06	1992-01-14	Litton Systems, Inc.	Ring laser gyroscope with geometrically induced bias
US5386288A (en) *	1987-10-28	1995-01-31	Litton Systems, Inc.	Split gain multimode ring laser gyroscope and method
US4969743A (en) *	1988-06-06	1990-11-13	Litton Systems, Inc.	Faraday magnet for the reduction of multi-oscillator bias thermal sensitivity
US5469256A (en) *	1988-07-29	1995-11-21	Litton Systems, Inc.	Multipole magnetic geometry for a ring laser gyroscope
US4960331A (en) *	1988-12-02	1990-10-02	Litton Systems, Inc.	Faraday rotator assembly
GB2227879B (en) *	1989-02-03	1994-02-09	Ferranti Int Signal	Multi-oscillator ring laser gyroscope
US5907402A (en) *	1990-02-12	1999-05-25	Martin; Graham J.	Multioscillator ring laser gyro using compensated optical wedge
GB9412528D0 (en) *	1994-06-22	1994-08-10	Bt & D Technologies Ltd	Packaged optical amplifier assembly
CN115727831A (en) *	2022-11-11	2023-03-03	中国航空工业集团公司西安飞行自动控制研究所	Laser gyroscope weight reduction cavity structure

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3744908A (en) *	1968-12-16	1973-07-10	Honeywell Inc	Externally biased ring laser
FR2041638A5 (en) *	1969-05-09	1971-01-29	Comp Generale Electricite
US3854819A (en) *	1971-03-03	1974-12-17	K Andringa	Laser gyroscope
US3973851A (en) *	1973-03-29	1976-08-10	United Technologies Corporation	Dispersion compensated laser gyro (U)
CA1077602A (en) *	1976-01-02	1980-05-13	Raytheon Company	Electromagnetic wave ring resonator
US4141651A (en) *	1977-01-10	1979-02-27	Raytheon Company	Laser gyroscope output optics structure
DE2821330A1 (en) *	1977-05-18	1978-11-30	Litton Systems Inc	RING LASER GYROSCOPE
CA1116279A (en) *	1978-01-03	1982-01-12	Terry A. Dorschner	Laser gyroscope system
GB2017394B (en) *	1978-03-27	1982-06-23	Raytheon Co	Laser gyroscope
JPS557523A (en) *	1978-06-29	1980-01-19	Sumitomo Metal Mining Co Ltd	Production of silver peroxide
CA1136743A (en) *	1978-08-31	1982-11-30	Albert N. Zampiello	Laser gyro oscillation suppression
US4213705A (en) *	1978-11-09	1980-07-22	Litton Systems, Inc.	Four mode Zeeman laser gyroscope with minimum hole burning competition

1981
- 1981-08-20 CA CA000384267A patent/CA1189600A/en not_active Expired
- 1981-09-28 FR FR8118232A patent/FR2492522B1/en not_active Expired
- 1981-10-15 JP JP56164909A patent/JPS5796581A/en active Granted
- 1981-10-16 IT IT49504/81A patent/IT1142901B/en active
- 1981-10-16 NL NL8104726A patent/NL8104726A/en not_active Application Discontinuation
- 1981-10-16 GB GB8131273A patent/GB2087638B/en not_active Expired
- 1981-10-16 DE DE3141175A patent/DE3141175C2/en not_active Expired - Fee Related
1983
- 1983-12-15 GB GB08333405A patent/GB2138585B/en not_active Expired

Also Published As

Publication number	Publication date
JPS5796581A (en)	1982-06-15
FR2492522A1 (en)	1982-04-23
JPH02870B2 (en)	1990-01-09
GB2087638A (en)	1982-05-26
IT8149504A0 (en)	1981-10-16
GB2087638B (en)	1984-12-05
FR2492522B1 (en)	1985-07-19
DE3141175A1 (en)	1982-05-19
GB8333405D0 (en)	1984-01-25
IT1142901B (en)	1986-10-15
NL8104726A (en)	1982-05-17
CA1189600A (en)	1985-06-25
DE3141175C2 (en)	1994-03-10
GB2138585A (en)	1984-10-24

Publication	Publication Date	Title
DE3464810D1 (en)	1987-08-20	Faraday rotator assembly
GB2143957B (en)	1985-09-25	Electrical continuimeter
ZA81976B (en)	1982-07-28	Androstane carbothioates
JPS57127859A (en)	1982-08-09	Wattmeter
JPS56150919A (en)	1981-11-21	Breaker
JPS56150920A (en)	1981-11-21	Breaker
JPS56130905A (en)	1981-10-14	Magnet
JPS5739357A (en)	1982-03-04	Wattmeter
GB2138585B (en)	1985-06-05	Faraday rotator
IL59705A0 (en)	1980-06-30	Padlock
JPS5729930A (en)	1982-02-18	Analyzer
GB8319678D0 (en)	1983-08-24	Magnet assemblies
JPS57124407A (en)	1982-08-03	Electromagnet
GB2071198B (en)	1983-11-30	Padlock
GB2068964B (en)	1984-09-26	7-oxygenated sterol 3-glycosides
GB2077626B (en)	1983-06-02	Soil-separating assemblies
JPS574547A (en)	1982-01-11	Analyzer
JPS56106324A (en)	1981-08-24	Breaker
JPS5781576A (en)	1982-05-21	Magnet catch
JPS56114245A (en)	1981-09-08	Breaker
JPS56128527A (en)	1981-10-08	Breaker
JPS56103838A (en)	1981-08-19	Breaker
JPS56114246A (en)	1981-09-08	Breaker
JPS57105999A (en)	1982-07-01	Faraday shield
GB8420575D0 (en)	1984-09-19	Rotator

Legal Events

Date	Code	Title	Description
1997-06-04	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19961016