JP5223794B2 - 磁気センサー - Google Patents
磁気センサー Download PDFInfo
- Publication number
- JP5223794B2 JP5223794B2 JP2009152063A JP2009152063A JP5223794B2 JP 5223794 B2 JP5223794 B2 JP 5223794B2 JP 2009152063 A JP2009152063 A JP 2009152063A JP 2009152063 A JP2009152063 A JP 2009152063A JP 5223794 B2 JP5223794 B2 JP 5223794B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- gas
- cell
- polarized light
- circularly polarized
- 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 - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/26—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux using optical pumping
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
Claims (4)
- 光ポンピング法を用いて磁場を測定する磁気センサーであって、
価電子が奇数個の原子又はイオンからなる第1ガスと、
前記第1ガスに対して第1の円偏光を入射させるプローブ光源と、
前記第1ガスを透過した前記第1の円偏光である第2の円偏光の光路上に配置された価電子が奇数個の原子又はイオンからなる第2ガスと、
前記第1ガス及び前記第2ガスに対して前記第1の円偏光及び前記第2の円偏光の光軸と交差する方向に交流磁場を発生させ、磁気共鳴を生じさせる交流磁場発生器と、
前記第1ガス及び前記第2ガスに対して前記第1の円偏光及び前記第2の円偏光の光軸と平行な方向にそれぞれ異なる強さのバイアス磁場を発生させ、前記第1ガスにおける前記第1の円偏光の光透過率と前記第2ガスにおける前記第2の円偏光の光透過率とを異ならせるバイアス磁場発生器と、
前記第1の円偏光及び前記第2ガスを透過した前記第2の円偏光である第3の円偏光の光量を検出する検出器と、を有することを特徴とする磁気センサー。 - 前記バイアス磁場発生器は、前記第1ガスにおけるバイアス磁場が前記第2ガスにおけるバイアス磁場よりも磁場の強さが大きくなるようにバイアス磁場を発生させることを特徴とする請求項1に記載の磁気センサー。
- 前記バイアス磁場発生器は、前記第2ガスにおけるバイアス磁場が前記第1ガスにおけるバイアス磁場よりも磁場の強さが大きくなるようにバイアス磁場を発生させることを特徴とする請求項1に記載の磁気センサー。
- 前記第1ガスと前記第2ガスとが同一セル内に封入されていることを特徴とする請求項1〜3のいずれか1項に記載の磁気センサー。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009152063A JP5223794B2 (ja) | 2009-06-26 | 2009-06-26 | 磁気センサー |
US12/759,849 US8427146B2 (en) | 2009-06-26 | 2010-04-14 | Magnetic sensor for measuring a magnetic field using optical pumping method |
US13/846,410 US9529061B2 (en) | 2009-06-26 | 2013-03-18 | Magnetic sensor for measuring a magnetic field using optical pumping method that has a probe light and magnetic field generators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009152063A JP5223794B2 (ja) | 2009-06-26 | 2009-06-26 | 磁気センサー |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013050975A Division JP2013127483A (ja) | 2013-03-13 | 2013-03-13 | 磁気センサー |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011007659A JP2011007659A (ja) | 2011-01-13 |
JP5223794B2 true JP5223794B2 (ja) | 2013-06-26 |
Family
ID=43379960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009152063A Expired - Fee Related JP5223794B2 (ja) | 2009-06-26 | 2009-06-26 | 磁気センサー |
Country Status (2)
Country | Link |
---|---|
US (2) | US8427146B2 (ja) |
JP (1) | JP5223794B2 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5223794B2 (ja) * | 2009-06-26 | 2013-06-26 | セイコーエプソン株式会社 | 磁気センサー |
JP5799553B2 (ja) * | 2011-04-01 | 2015-10-28 | セイコーエプソン株式会社 | 磁場測定装置、磁場測定システムおよび磁場測定方法 |
JP6134092B2 (ja) | 2011-10-18 | 2017-05-24 | セイコーエプソン株式会社 | 磁場計測装置 |
KR101310750B1 (ko) | 2012-01-31 | 2013-09-24 | 한국표준과학연구원 | 생체자기공명 장치 및 그 측정 방법 |
CN104620123B (zh) * | 2012-07-11 | 2018-03-23 | 纳特维斯公司 | 小型化分子询问和数据系统 |
CN103235272B (zh) * | 2013-04-26 | 2015-05-13 | 中国科学院上海光学精密机械研究所 | 高能电子束磁场诊断仪 |
US10215816B2 (en) | 2013-12-03 | 2019-02-26 | Hitachi, Ltd. | Magnetic field measuring apparatus |
CN103885003A (zh) * | 2014-03-20 | 2014-06-25 | 河海大学常州校区 | 基于金属包覆磁流体波导的微小磁场传感器及测量系统 |
JP2016080613A (ja) * | 2014-10-21 | 2016-05-16 | セイコーエプソン株式会社 | 磁気計測装置、ガスセル、磁気計測装置の製造方法、およびガスセルの製造方法 |
JP2015212715A (ja) * | 2015-08-26 | 2015-11-26 | セイコーエプソン株式会社 | 磁場測定装置、磁場測定システムおよび磁場測定方法 |
US20180313908A1 (en) * | 2017-04-28 | 2018-11-01 | QuSpin Inc. | System for continuously calibrating a magnetic imaging array |
CN107831094B (zh) * | 2017-10-30 | 2020-04-07 | 中国人民解放军国防科技大学 | 基于碱金属原子弛豫率变化测量气体扩散常数的方法 |
CN112180304B (zh) * | 2020-11-30 | 2021-02-19 | 之江实验室 | 一种基于复合气室的极弱磁测量装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5928222A (en) * | 1982-08-06 | 1999-07-27 | Kleinerman; Marcos Y. | Fiber optic sensing techniques in laser medicine |
US5991479A (en) * | 1984-05-14 | 1999-11-23 | Kleinerman; Marcos Y. | Distributed fiber optic sensors and systems |
JPH01191080A (ja) * | 1988-01-26 | 1989-08-01 | Mitsubishi Electric Corp | 光磁気共鳴磁力計 |
US5929443A (en) * | 1995-12-18 | 1999-07-27 | The Research Foundation City College Of New York | Imaging of objects based upon the polarization or depolarization of light |
US5719399A (en) * | 1995-12-18 | 1998-02-17 | The Research Foundation Of City College Of New York | Imaging and characterization of tissue based upon the preservation of polarized light transmitted therethrough |
US6472869B1 (en) * | 2001-06-18 | 2002-10-29 | United States Of America As Represented By The Secretary Of The Air Force | Diode laser-pumped magnetometer |
JP5118453B2 (ja) * | 2007-11-26 | 2013-01-16 | 株式会社日立ハイテクノロジーズ | 光ポンピング磁力計 |
JP5223794B2 (ja) * | 2009-06-26 | 2013-06-26 | セイコーエプソン株式会社 | 磁気センサー |
JP5799553B2 (ja) * | 2011-04-01 | 2015-10-28 | セイコーエプソン株式会社 | 磁場測定装置、磁場測定システムおよび磁場測定方法 |
-
2009
- 2009-06-26 JP JP2009152063A patent/JP5223794B2/ja not_active Expired - Fee Related
-
2010
- 2010-04-14 US US12/759,849 patent/US8427146B2/en active Active
-
2013
- 2013-03-18 US US13/846,410 patent/US9529061B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20130221960A1 (en) | 2013-08-29 |
JP2011007659A (ja) | 2011-01-13 |
US8427146B2 (en) | 2013-04-23 |
US20100327861A1 (en) | 2010-12-30 |
US9529061B2 (en) | 2016-12-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5223794B2 (ja) | 磁気センサー | |
JP5640335B2 (ja) | 磁気センサー | |
US20210063510A1 (en) | Methods and systems for fast field zeroing for magnetoencephalography (meg) | |
US9383419B2 (en) | Magnetic gradiometer and magnetic sensing method | |
JP5264242B2 (ja) | 原子磁力計及び磁力計測方法 | |
US6472869B1 (en) | Diode laser-pumped magnetometer | |
US9244137B2 (en) | Optical pumping magnetometer and magnetic sensing method | |
US11054489B2 (en) | Vector magnetometer in alignment with two differently polarised probe beams | |
Afach et al. | Highly stable atomic vector magnetometer based on free spin precession | |
EP2952855B1 (en) | Optical probe beam stabilization in an atomic sensor system | |
JP2011507250A (ja) | 環境磁場の補正を備えた装置 | |
Yin et al. | In-situ relaxation rate measurement in magnetic modulated atomic magnetometers | |
Bevington et al. | Dual-frequency cesium spin maser | |
JP5682344B2 (ja) | 磁気測定装置および生体状態測定装置 | |
JP6880834B2 (ja) | 磁気センサ、生体磁気測定装置 | |
JP2013127483A (ja) | 磁気センサー | |
US11442119B2 (en) | Magnetometer with optical pumping of a sensitive element with linearly polarised light and multiple-pass in the sensitive element | |
Huang et al. | Axionlike particle detection in alkali-noble-gas haloscopes | |
US11493575B2 (en) | Three-axis optically pumped magnetometer for gradiometric measurement | |
US11841404B1 (en) | Vector measurements using a pulsed, optically pumped atomic magnetometer | |
JP2015062020A (ja) | 磁気測定装置および生体状態測定装置 | |
CN113341353B (zh) | 基于数字微镜阵列的小尺度空间磁场梯度测量系统及方法 | |
JP2015028498A (ja) | 磁気センサー | |
Primdahl | Scalar magnetometers for space applications | |
Deans et al. | Quantum magnetometry for space |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20120106 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20120106 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20120127 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20130123 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20130212 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20130225 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5223794 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20160322 Year of fee payment: 3 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |