Investigation and improvement of the spin self-sustaining magnetometer
The spin self-sustaining atomic magnetometer has the advantage of 1/τ measurement and great development potential in many applications. In this paper, we investigated the main elements that affect the stability and accuracy of the self-sustaining magnetometer and proposed the methods to improve its...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2020-09-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0011720 |
| _version_ | 1819229052389556224 |
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| author | Q. Zhao B. L. Fan S. G. Wang L. J. Wang |
| author_facet | Q. Zhao B. L. Fan S. G. Wang L. J. Wang |
| author_sort | Q. Zhao |
| collection | DOAJ |
| description | The spin self-sustaining atomic magnetometer has the advantage of 1/τ measurement and great development potential in many applications. In this paper, we investigated the main elements that affect the stability and accuracy of the self-sustaining magnetometer and proposed the methods to improve its performance based on the measurement results. The correlation coefficient between fluctuations of the magnetic field generated by coils and the spin Larmor precession frequency is 0.97, which mainly dominates the stability in a short term. The accuracy of the magnetometer is affected by the power and frequency of the pump light. The Larmor precession frequency coefficient related to the pump light power is 26 mHz/mW, and the effect on the Larmor precession frequency is minimized when the pump light frequency is red detuned by 200 MHz from the 85Rb transition D1 line F = 3 to F′ = 3. The 1/τ measurement time after these corrections can be extended to 10 s, and the sensitivity achieved is 149 fT/Hz, which is close to the quantum projection noise limit of the system. |
| first_indexed | 2024-12-23T11:07:02Z |
| format | Article |
| id | doaj.art-51ddb485a17b413f92211163ed112853 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-23T11:07:02Z |
| publishDate | 2020-09-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-51ddb485a17b413f92211163ed1128532022-12-21T17:49:27ZengAIP Publishing LLCAIP Advances2158-32262020-09-01109095204095204-510.1063/5.0011720Investigation and improvement of the spin self-sustaining magnetometerQ. Zhao0B. L. Fan1S. G. Wang2L. J. Wang3Joint Institute for Measurement Science (JMI), Tsinghua University, Beijing 100084, ChinaJoint Institute for Measurement Science (JMI), Tsinghua University, Beijing 100084, ChinaJoint Institute for Measurement Science (JMI), Tsinghua University, Beijing 100084, ChinaJoint Institute for Measurement Science (JMI), Tsinghua University, Beijing 100084, ChinaThe spin self-sustaining atomic magnetometer has the advantage of 1/τ measurement and great development potential in many applications. In this paper, we investigated the main elements that affect the stability and accuracy of the self-sustaining magnetometer and proposed the methods to improve its performance based on the measurement results. The correlation coefficient between fluctuations of the magnetic field generated by coils and the spin Larmor precession frequency is 0.97, which mainly dominates the stability in a short term. The accuracy of the magnetometer is affected by the power and frequency of the pump light. The Larmor precession frequency coefficient related to the pump light power is 26 mHz/mW, and the effect on the Larmor precession frequency is minimized when the pump light frequency is red detuned by 200 MHz from the 85Rb transition D1 line F = 3 to F′ = 3. The 1/τ measurement time after these corrections can be extended to 10 s, and the sensitivity achieved is 149 fT/Hz, which is close to the quantum projection noise limit of the system.http://dx.doi.org/10.1063/5.0011720 |
| spellingShingle | Q. Zhao B. L. Fan S. G. Wang L. J. Wang Investigation and improvement of the spin self-sustaining magnetometer AIP Advances |
| title | Investigation and improvement of the spin self-sustaining magnetometer |
| title_full | Investigation and improvement of the spin self-sustaining magnetometer |
| title_fullStr | Investigation and improvement of the spin self-sustaining magnetometer |
| title_full_unstemmed | Investigation and improvement of the spin self-sustaining magnetometer |
| title_short | Investigation and improvement of the spin self-sustaining magnetometer |
| title_sort | investigation and improvement of the spin self sustaining magnetometer |
| url | http://dx.doi.org/10.1063/5.0011720 |
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