GB1375959A - Ring laser with stray magnetic field compensation - Google Patents

Ring laser with stray magnetic field compensation

Info

Publication number
GB1375959A
GB1375959A GB3396673A GB3396673A GB1375959A GB 1375959 A GB1375959 A GB 1375959A GB 3396673 A GB3396673 A GB 3396673A GB 3396673 A GB3396673 A GB 3396673A GB 1375959 A GB1375959 A GB 1375959A
Authority
GB
United Kingdom
Prior art keywords
magnetic field
july
optical system
field acting
controlled
Prior art date
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
GB3396673A
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.)
Boeing North American Inc
Original Assignee
Rockwell International Corp
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 Rockwell International Corp filed Critical Rockwell International Corp
Publication of GB1375959A publication Critical patent/GB1375959A/en
Expired legal-status Critical Current

Links

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
    • H01S3/05—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
    • 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

Landscapes

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

Abstract

1375959 Lazers ROCKWELL INTERNATIONAL CORP 17 July 1973 [17 July 1972] 33966/73 Heading H1C To prevent external magnetic fields from influencing the frequency separation of counterrotating beams which are biased apart by a Faraday element in a ring lazer, two such elements together with matched phase plates are provided in the optical path between adjacent resonator reflectors with each element controlled by a magnetic field acting in a direction opposite to the field acting on the other element. As shown in Fig. 1, the resonator is formed by corner prisms 2, 3, 4, and its path length is increased by the use of refracting surfaces 6, 7 in an optical system which also provides frequency selections by dispersion and produces output beams by beam splitting. Stimulated emmission is generated in an He-Ne discharge tube 1, and the optical system, Fig. 2, includes refracting prisms 21, 22, Faraday elements 10, 12 controlled by oppositely directed fields from respective electromagnets 11, 14 and “ wave plates 15, 16, 18 and 20. (For Figures see next column.)
GB3396673A 1972-07-17 1973-07-17 Ring laser with stray magnetic field compensation Expired GB1375959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27258372A 1972-07-17 1972-07-17

Publications (1)

Publication Number Publication Date
GB1375959A true GB1375959A (en) 1974-12-04

Family

ID=23040419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3396673A Expired GB1375959A (en) 1972-07-17 1973-07-17 Ring laser with stray magnetic field compensation

Country Status (3)

Country Link
DE (1) DE2335597A1 (en)
FR (1) FR2193193B1 (en)
GB (1) GB1375959A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105043996A (en) * 2014-04-29 2015-11-11 邓文平 Spectral measurement method of spectrograph
CN105334556A (en) * 2015-12-01 2016-02-17 苏州谱道光电科技有限公司 Reflecting prism for optical resonant cavity and optical resonant cavity and optical spectrum measuring instrument applying same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1116279A (en) * 1978-01-03 1982-01-12 Terry A. Dorschner Laser gyroscope system
DE19635982C2 (en) * 1996-09-05 1998-09-10 Daimler Benz Ag Solid-state laser gyroscope
FR2894663B1 (en) * 2005-12-13 2008-02-08 Thales Sa OPTICALLY ACTIVE SOLID STATE GYROLASER THROUGH ALTERNATIVE BIAIS

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3649931A (en) * 1969-11-03 1972-03-14 Sperry Rand Corp Compensated frequency biasing system for ring laser

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105043996A (en) * 2014-04-29 2015-11-11 邓文平 Spectral measurement method of spectrograph
CN105334556A (en) * 2015-12-01 2016-02-17 苏州谱道光电科技有限公司 Reflecting prism for optical resonant cavity and optical resonant cavity and optical spectrum measuring instrument applying same
WO2017092613A1 (en) * 2015-12-01 2017-06-08 苏州谱道光电科技有限公司 Reflecting prism for optical resonant cavity, and optical resonant cavity and spectral measurement instrument thereof
US20180356569A1 (en) * 2015-12-01 2018-12-13 Suzhou Taospec Optronics Co., Ltd. Reflecting prism for optical resonant cavity, and optical resonant cavity and spectral measurement instrument thereof
CN109061783A (en) * 2015-12-01 2018-12-21 苏州谱道光电科技有限公司 Optical resonator reflecting prism and its optical resonator and optical spectrum instrumentation

Also Published As

Publication number Publication date
FR2193193A1 (en) 1974-02-15
FR2193193B1 (en) 1977-02-18
DE2335597A1 (en) 1974-01-31

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees