JP4875218B2 - チップスケールの原子ジャイロスコープ - Google Patents
チップスケールの原子ジャイロスコープ Download PDFInfo
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- JP4875218B2 JP4875218B2 JP2011141893A JP2011141893A JP4875218B2 JP 4875218 B2 JP4875218 B2 JP 4875218B2 JP 2011141893 A JP2011141893 A JP 2011141893A JP 2011141893 A JP2011141893 A JP 2011141893A JP 4875218 B2 JP4875218 B2 JP 4875218B2
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- Prior art keywords
- noble gas
- alkali metal
- vapor cavity
- vapor
- atoms
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- 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
-
- 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
- G01C19/60—Electronic or nuclear magnetic resonance gyrometers
- G01C19/62—Electronic or nuclear magnetic resonance gyrometers with optical pumping
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- General Physics & Mathematics (AREA)
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Description
(1) φ=(n+−n−)(1/λ)
から一般に理解することができる。
PRbは87Rbの偏極であり、
nxは密度であり、
σseは、レート平均化されたバイナリ・スピン交換断面積であり、
Kxeは、ファンデルワールス錯体におけるスピン交換によるもの
である。
Claims (4)
- アルカリ金属原子及び希ガス原子の気化した源を含むように適合された蒸気キャビティを含む蒸気セルであって、前記希ガス原子は1つの希ガス同位体からのものである、蒸気セルと、
前記蒸気キャビティ内の前記アルカリ金属原子を励起状態へと光ポンピングするために光ポンピング軸に沿って第1のレーザ・ビームを生成するように適合されたポンプ・レーザ源であって、前記第1のレーザ・ビームが、前記希ガス原子における核スピン偏極を誘導するように適合される、ポンプ・レーザ源と、
前記第1のレーザ・ビーム及び前記蒸気キャビティと光学的に連絡する第1の光検出器であって、前記第1のレーザ・ビームの波長を前記アルカリ金属原子の搬送波長に維持するための第1のサーボ機構に接続される第1の光検出器と、
前記蒸気キャビティ内の前記希ガス原子の偏極の角度をつきとめるために前記光ポンピング軸を横切るプローブ軸に沿って第2のレーザ・ビームを生成するように適合された検知レーザ源と、
前記第2のレーザ・ビーム及び前記蒸気キャビティと光学的に連絡する第2の光検出器であって、前記第2のレーザ・ビームの波長を前記アルカリ金属原子の前記搬送波長から離調させて維持するための第2のサーボ機構に接続された第2の光検出器と
を備えるNMRジャイロスコープ。 - 請求項1に記載のNMRジャイロスコープであって、前記蒸気セルは、供給するためのアルカリ金属原子及び希ガス原子のうちの少なくとも1つを貯蔵するための1以上の貯蔵チャンバを含み、前記貯蔵チャンバは前記蒸気キャビティと通じているものである、NMRジャイロスコープ。
- 物体の機械的な回転を検知及び測定する方法であって、
アルカリ金属原子及び希ガス原子の気化した源を含む蒸気キャビティを含む蒸気セルを提供するステップであって、前記希ガス原子は1つの希ガス同位体からのものである、ステップと、
前記蒸気キャビティ及び第1の光検出器と光学的に連絡する第1のレーザ源を提供するステップであって、前記第1のレーザ源が、前記蒸気キャビティ内の前記アルカリ金属原子を励起状態へと光ポンピングするために、第1のレーザ・ビームを前記蒸気キャビティ内へ向けるように適合されるものであり、前記第1のレーザ・ビームは、前記希ガス原子における核スピンの偏極を起こすように適合されるものである、ステップと、
前記蒸気キャビティ及び第2の光検出器と光学的に連絡する第2のレーザ源を提供するステップであって、前記第2のレーザ源が、前記蒸気キャビティの前記希ガス原子の核スピン偏極をつきとめるために、第2のレーザ・ビームを前記蒸気キャビティ内へ向けて前記第2のレーザ・ビームが前記第1のレーザ・ビームを横切るように適合される、ステップと、
前記蒸気キャビティ内の前記希ガス原子の回転角度を測定するステップと、
ジャイロスコープの機械的な回転の測定結果を出力するステップと
前記第1のレーザ源及び前記第1の光検出器と連絡する第1のサーボ機構を提供するステップと、
前記第1の光検出器からのフィードバック信号を使用して、前記第1のレーザ源へ供給される電流を或る波長のところで固定するステップであって、前記第1のレーザ源からの前記波長が、前記蒸気キャビティ内の前記アルカリ金属原子の搬送波長に相当するものである、ステップと、
前記第2のレーザ源及び前記第2の光検出器と連絡する第2のサーボ機構を提供するステップと、
前記第2の光検出器からのフィードバック信号を使用して、前記第2のレーザ源へ供給される電流を或る波長のところで固定するステップであって、前記第2のレーザ源からの前記波長が、前記蒸気キャビティ内の前記アルカリ金属原子の前記波長から離調された波長に相当するものである、ステップと
を備える方法。 - 請求項3に記載の方法であって、前記蒸気セルは、供給するためのアルカリ金属原子及び希ガス原子のうちの少なくとも1つを貯蔵するための1以上の貯蔵チャンバを含み、前記貯蔵チャンバは前記蒸気キャビティと通じているものである、方法。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/419,052 | 2006-05-18 | ||
| US11/419,052 US7359059B2 (en) | 2006-05-18 | 2006-05-18 | Chip scale atomic gyroscope |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| JP2007037876A Division JP4809260B2 (ja) | 2006-05-18 | 2007-02-19 | チップスケールの原子ジャイロスコープ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011191323A JP2011191323A (ja) | 2011-09-29 |
| JP4875218B2 true JP4875218B2 (ja) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2007037876A Expired - Fee Related JP4809260B2 (ja) | 2006-05-18 | 2007-02-19 | チップスケールの原子ジャイロスコープ |
| JP2011141893A Expired - Fee Related JP4875218B2 (ja) | 2006-05-18 | 2011-06-27 | チップスケールの原子ジャイロスコープ |
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| JP2007037876A Expired - Fee Related JP4809260B2 (ja) | 2006-05-18 | 2007-02-19 | チップスケールの原子ジャイロスコープ |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7359059B2 (ja) |
| EP (1) | EP1865283A1 (ja) |
| JP (2) | JP4809260B2 (ja) |
| KR (1) | KR20070111957A (ja) |
Cited By (1)
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| KR101473737B1 (ko) | 2013-12-27 | 2014-12-18 | 국방과학연구소 | 디스펜서와 시준 개스킷을 이용한 원자간섭계 자이로스코프 |
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| WO2001031756A1 (en) | 1999-10-29 | 2001-05-03 | E20 Communications, Inc. | Modulated integrated optically pumped vertical cavity surface emitting lasers |
| AU2002348428A1 (en) * | 2001-10-31 | 2003-05-12 | The Regents Of The University Of California | Remote nmr/mri detection of laser polarized gases |
| US20040035182A1 (en) * | 2002-05-16 | 2004-02-26 | Steve Kadlecek | Methods and systems for determining polarization of a gas based on electron paramagnetic resonance |
| US6900702B2 (en) | 2002-08-14 | 2005-05-31 | Honeywell International Inc. | MEMS frequency standard for devices such as atomic clock |
| DE102004002639A1 (de) * | 2004-01-19 | 2005-09-15 | Forschungszentrum Jülich GmbH | Verfahren zur Anreicherung von hyperpolarisierten Atomkernen und Vorrichtung zur Durchführung des Verfahrens |
| EP1828717B1 (en) * | 2004-12-20 | 2011-04-20 | Northrop Grumman Systems Corporation | Nmr gyroscope |
-
2006
- 2006-05-18 US US11/419,052 patent/US7359059B2/en active Active
-
2007
- 2007-02-18 KR KR1020070016873A patent/KR20070111957A/ko not_active Ceased
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101473737B1 (ko) | 2013-12-27 | 2014-12-18 | 국방과학연구소 | 디스펜서와 시준 개스킷을 이용한 원자간섭계 자이로스코프 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070111957A (ko) | 2007-11-22 |
| JP4809260B2 (ja) | 2011-11-09 |
| JP2011191323A (ja) | 2011-09-29 |
| US7359059B2 (en) | 2008-04-15 |
| EP1865283A1 (en) | 2007-12-12 |
| JP2007309915A (ja) | 2007-11-29 |
| US20070266784A1 (en) | 2007-11-22 |
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