Development of 100 kHz optical pumped atomic magnetometer module for non‐magnetic shield
In recent years, various sensors for biomagnetic measurement have been researched and developed. These are mainly for low frequency small signals such as magnetocardiography. Optical pumped atomic magnetometer (OPAM) would rather be applicable to this high frequency signal since there is a valid sig...
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| Veröffentlicht in: | Electronics and communications in Japan 2021-06, Vol.104 (2), p.n/a |
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| creator | Takeda, Shun Kumagai, Hiroshi Nebuya, Satoru |
| description | In recent years, various sensors for biomagnetic measurement have been researched and developed. These are mainly for low frequency small signals such as magnetocardiography. Optical pumped atomic magnetometer (OPAM) would rather be applicable to this high frequency signal since there is a valid signal at higher frequencies. However, the highly sensitive OPAM uses a magnetic shield and an anti‐vibration table, which makes the OPAM system larger. By packing the optical system in one case, you can develop an OPAM module that can measure even while moving. As a result, by using a phase‐locked loop, we have achieved a sensitivity of 2.548 pT/Hz1/2 for a 100 kHz magnetic signal in the presence of a bias magnetic field and electromagnetic noise. |
| doi_str_mv | 10.1002/ecj.12319 |
| format | Article |
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These are mainly for low frequency small signals such as magnetocardiography. Optical pumped atomic magnetometer (OPAM) would rather be applicable to this high frequency signal since there is a valid signal at higher frequencies. However, the highly sensitive OPAM uses a magnetic shield and an anti‐vibration table, which makes the OPAM system larger. By packing the optical system in one case, you can develop an OPAM module that can measure even while moving. 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| source | Wiley Online Library Journals Frontfile Complete; Business Source Complete |
| subjects | bio‐magnetism measurement Electromagnetic noise Magnetic shielding Magnetic signals Magnetocardiography Magnetometers Modules optically‐pumped atomic magnetometer phase‐locked loop |
| title | Development of 100 kHz optical pumped atomic magnetometer module for non‐magnetic shield |
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