IT1142901B - IMPROVEMENT IN LASER GYROSCOPES - Google Patents

IMPROVEMENT IN LASER GYROSCOPES

Info

Publication number
IT1142901B
IT1142901B IT49504/81A IT4950481A IT1142901B IT 1142901 B IT1142901 B IT 1142901B IT 49504/81 A IT49504/81 A IT 49504/81A IT 4950481 A IT4950481 A IT 4950481A IT 1142901 B IT1142901 B IT 1142901B
Authority
IT
Italy
Prior art keywords
improvement
laser gyroscopes
gyroscopes
laser
Prior art date
Application number
IT49504/81A
Other languages
Italian (it)
Other versions
IT8149504A0 (en
Inventor
Irl Wilson Smith
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.)
Filing date
Publication date
Application filed by Raytheon Co filed Critical Raytheon Co
Publication of IT8149504A0 publication Critical patent/IT8149504A0/en
Application granted granted Critical
Publication of IT1142901B publication Critical patent/IT1142901B/en

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
    • 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)
IT49504/81A 1980-10-17 1981-10-16 IMPROVEMENT IN LASER GYROSCOPES IT1142901B (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IT8149504A0 IT8149504A0 (en) 1981-10-16
IT1142901B true IT1142901B (en) 1986-10-15

Family

ID=22731072

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49504/81A IT1142901B (en) 1980-10-17 1981-10-16 IMPROVEMENT IN LASER GYROSCOPES

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 (14)

* 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
GB2184285B (en) * 1983-11-07 1990-08-01 Raytheon Co Ring laser gyroscope
US4652132A (en) * 1983-11-07 1987-03-24 Raytheon Company Optical power compensated 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

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

Also Published As

Publication number Publication date
FR2492522B1 (en) 1985-07-19
JPH02870B2 (en) 1990-01-09
GB2138585B (en) 1985-06-05
CA1189600A (en) 1985-06-25
JPS5796581A (en) 1982-06-15
FR2492522A1 (en) 1982-04-23
DE3141175A1 (en) 1982-05-19
NL8104726A (en) 1982-05-17
DE3141175C2 (en) 1994-03-10
GB8333405D0 (en) 1984-01-25
GB2087638A (en) 1982-05-26
GB2087638B (en) 1984-12-05
IT8149504A0 (en) 1981-10-16
GB2138585A (en) 1984-10-24

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971027