EP2342535A1 - Gyrolaser à milieu amplificateur à état solide et à cavité optique en anneau - Google Patents
Gyrolaser à milieu amplificateur à état solide et à cavité optique en anneauInfo
- Publication number
- EP2342535A1 EP2342535A1 EP09740149A EP09740149A EP2342535A1 EP 2342535 A1 EP2342535 A1 EP 2342535A1 EP 09740149 A EP09740149 A EP 09740149A EP 09740149 A EP09740149 A EP 09740149A EP 2342535 A1 EP2342535 A1 EP 2342535A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- energy
- deoile
- spherical mirror
- optical
- assembly
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- G01C19/68—Lock-in prevention
- G01C19/70—Lock-in prevention by mechanical means
Definitions
- Laser gyroscopes or gyrolasers
- a gaseous amplifying medium which is usually a mixture of helium and neon.
- the excitation of the gaseous amplifying medium is then generally performed by creating a plasma in the gas, for example by generating a discharge between two electrodes which are mechanically secured to the cavity.
- the gaseous nature of the amplifying medium remains a source of technical complications when producing the laser gyro, in particular because of the high purity of gas required.
- it induces sources of laser aging, with a sensitivity to the sealing of the cavity, a degradation of some electrodes with the operation.
- a solid state amplifier gyrolaser in which the gaseous amplifying medium is replaced by a solid element, for example, by using neodymium ions in a YAG (Yttrium-aluminum-garnet) matrix, commonly noted.
- Nd YAG
- a crystalline matrix or a glass doped with ions belonging to the rare earth (Erbium, Ytterbium ...) class as the amplifying medium, but also a semiconductor material. This removes all problems inherent to the gaseous state of the amplifying medium.
- the fixing assembly comprises means for fixing the spherical mirror to maintain the position of the spherical mirror on the fixing assembly after adjustment of the energy injection.
- the laser gyro laser GL further comprises at least one external optical device for longitudinal injection of energy DEOILE in the solid state amplifier medium MAES.
- the laser gyro GL also comprises an EF fixing assembly adapted to make integral in translation and in rotation the assembly EE encompassing the optical cavity COA and the external optical device for longitudinal injection of energy.
- FIGS. 3 and 4 schematically illustrate two embodiments of an external optical device for longitudinal energy injection DEOILE according to FIG. 1 or 2.
- the portion of the fastening assembly EF serving as a support for the spherical mirror MS is inclined at approximately 45 ° with respect to the incident energy beam and is inclined at approximately 45 ° with respect to the reflected energy injection beam, in order to to reduce the inertia of the injection device with respect to the activation axis of the cavity while maintaining dimensions allowing a good focus while compensating for the geometric aberrations introduced by the optical device.
- the radius of curvature of the spherical mirror MS is between about 0.5 m and 4 m.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Lasers (AREA)
- Gyroscopes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0805984A FR2937739B1 (fr) | 2008-10-28 | 2008-10-28 | Gyrolaser a milieu amplificateur a etat solide et a cavite optique en anneau |
PCT/EP2009/064043 WO2010049372A1 (fr) | 2008-10-28 | 2009-10-26 | Gyrolaser a milieu amplificateur a etat solide et a cavite optique en anneau. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2342535A1 true EP2342535A1 (fr) | 2011-07-13 |
Family
ID=40749146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09740149A Withdrawn EP2342535A1 (fr) | 2008-10-28 | 2009-10-26 | Gyrolaser à milieu amplificateur à état solide et à cavité optique en anneau |
Country Status (7)
Country | Link |
---|---|
US (1) | US8576403B2 (fr) |
EP (1) | EP2342535A1 (fr) |
CN (1) | CN102177412B (fr) |
CA (1) | CA2737584A1 (fr) |
FR (1) | FR2937739B1 (fr) |
RU (1) | RU2540452C2 (fr) |
WO (1) | WO2010049372A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2937740B1 (fr) * | 2008-10-28 | 2010-10-29 | Thales Sa | Dispositif et procede de mise en vibration d'un element solide amplificateur au sein d'un gyrolaser |
CN103047979B (zh) * | 2011-10-13 | 2015-04-08 | 中国计量科学研究院 | 被动型激光陀螺 |
CN103278150B (zh) * | 2013-05-10 | 2015-10-28 | 浙江大学 | 一种检测角速度的光载微波陀螺方法 |
RU2617541C1 (ru) * | 2015-11-24 | 2017-04-25 | Акционерное общество "Концерн Радиоэлектронные технологии" (АО "КРЭТ") | Кольцевой лазер |
WO2017089489A1 (fr) * | 2015-11-27 | 2017-06-01 | Thales | Capteur a atomes froids pieges sur puce permettant une mesure de vitesse de rotation |
CN106197953B (zh) * | 2016-08-23 | 2019-01-01 | 中国航空工业集团公司西安飞行自动控制研究所 | 一种通用型激光陀螺反射镜在线测量装置 |
US10739137B2 (en) | 2018-08-17 | 2020-08-11 | Honeywell International Inc. | Solid state ring laser gyroscope using rare-earth gain dopants in glassy hosts |
US11476633B2 (en) | 2020-07-20 | 2022-10-18 | Honeywell International Inc. | Apparatus and methods for stable bidirectional output from ring laser gyroscope |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3102953A (en) * | 1958-07-09 | 1963-09-03 | Maxson Electronics Corp | Electromagnetic wave gyroscopes or angular velocity measuring systems |
US4525843A (en) * | 1982-04-29 | 1985-06-25 | The United States Of America As Represented By The Secretary Of The Navy | Ring laser with wavefront conjugating beams |
US4536087A (en) * | 1983-06-08 | 1985-08-20 | The Singer Company | Dither compensator for ring laser gyroscope |
US4807999A (en) * | 1986-03-13 | 1989-02-28 | Rockwell International Corporation | Two source passive ring laser gyroscope |
US4815852A (en) * | 1986-03-26 | 1989-03-28 | Russell Robert B | Apparatus for measuring rotation by a combination of the Sagnac and Fizeau effects |
US4844615A (en) * | 1987-01-30 | 1989-07-04 | Litton Systems, Inc. | Method and system for correcting random walk errors induced by rate reversals in a dithered ring laser gyroscope |
US5177764A (en) * | 1989-12-28 | 1993-01-05 | Harmonic Lightwaves, Inc. | Unidirectional, planar ring laser with birefringence |
US5367377A (en) * | 1990-04-20 | 1994-11-22 | Litton Systems, Inc. | Solid state split-gain multioscillator ring laser gyroscope |
US5408492A (en) * | 1993-05-21 | 1995-04-18 | Smiths Industries Aerospace & Defense Systems, Inc. | Solid medium optical ring laser rotation sensor |
US5579110A (en) * | 1994-08-31 | 1996-11-26 | Honeywell Inc. | In-line multiple rotation sensor assembly |
US6650682B1 (en) * | 1999-04-30 | 2003-11-18 | University Of New Mexico | Bi-directional short pulse ring laser |
FR2853061B1 (fr) * | 2003-03-25 | 2006-01-20 | Thales Sa | Gyrolaser a etat solide stabilise |
-
2008
- 2008-10-28 FR FR0805984A patent/FR2937739B1/fr not_active Expired - Fee Related
-
2009
- 2009-10-26 WO PCT/EP2009/064043 patent/WO2010049372A1/fr active Application Filing
- 2009-10-26 US US13/126,437 patent/US8576403B2/en not_active Expired - Fee Related
- 2009-10-26 RU RU2011121663/28A patent/RU2540452C2/ru not_active IP Right Cessation
- 2009-10-26 CN CN200980140002.8A patent/CN102177412B/zh not_active Expired - Fee Related
- 2009-10-26 CA CA2737584A patent/CA2737584A1/fr not_active Abandoned
- 2009-10-26 EP EP09740149A patent/EP2342535A1/fr not_active Withdrawn
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2010049372A1 * |
Also Published As
Publication number | Publication date |
---|---|
RU2011121663A (ru) | 2012-12-10 |
WO2010049372A1 (fr) | 2010-05-06 |
US20110235047A1 (en) | 2011-09-29 |
FR2937739A1 (fr) | 2010-04-30 |
CN102177412B (zh) | 2014-05-28 |
FR2937739B1 (fr) | 2010-11-19 |
CN102177412A (zh) | 2011-09-07 |
US8576403B2 (en) | 2013-11-05 |
CA2737584A1 (fr) | 2010-05-06 |
RU2540452C2 (ru) | 2015-02-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20110325 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: FEUGNET, GILLES Inventor name: SCHWARTZ, SYLVAIN Inventor name: GUTTY, FRANCOIS |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20171207 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20180418 |