Application and Performance Improvement of an Optical Power Stabilization System Based on MEMS-LCVR in a SERF Atomic Magnetometer
A stabilization method utilizing MEMS technology combined with a liquid crystal variable retarder (LCVR) was developed to enhance fiber laser output power stability and was applied to a spin-exchange relaxation-free (SERF) atomic magnetometer. Comparative experiments demonstrated that the unstabiliz...
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2025-06-01
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| author | Yitong Li Wenfei Zhang Jianqi Yang Ying Liu Yueyang Zhai |
| author_facet | Yitong Li Wenfei Zhang Jianqi Yang Ying Liu Yueyang Zhai |
| author_sort | Yitong Li |
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| description | A stabilization method utilizing MEMS technology combined with a liquid crystal variable retarder (LCVR) was developed to enhance fiber laser output power stability and was applied to a spin-exchange relaxation-free (SERF) atomic magnetometer. Comparative experiments demonstrated that the unstabilized laser output exhibited <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2.8</mn><mo>%</mo></mrow></semantics></math></inline-formula> power fluctuations over a 500 s period, while the stabilized laser reduced this to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.2</mn><mo>%</mo></mrow></semantics></math></inline-formula>. Spectral density analysis confirmed suppressed frequency-domain fluctuations, indicating improved robustness against disturbances. Furthermore, the stabilized laser also reduced optical noise in SERF magnetometry, achieving a sensitivity of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>19.2</mn><mspace width="3.33333pt"></mspace><mi>fT</mi><mo>/</mo><msup><mi>Hz</mi><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msup></mrow></semantics></math></inline-formula>. These results validate that the method optimizes both time- and frequency-domain performance, thereby advancing high-precision SERF magnetometry. |
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| publishDate | 2025-06-01 |
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| series | Photonics |
| spelling | doaj-art-c33c21dce18e4db5a8e9745a9ff36ff52025-06-25T14:19:08ZengMDPI AGPhotonics2304-67322025-06-0112657310.3390/photonics12060573Application and Performance Improvement of an Optical Power Stabilization System Based on MEMS-LCVR in a SERF Atomic MagnetometerYitong Li0Wenfei Zhang1Jianqi Yang2Ying Liu3Yueyang Zhai4School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, ChinaSchool of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, ChinaA stabilization method utilizing MEMS technology combined with a liquid crystal variable retarder (LCVR) was developed to enhance fiber laser output power stability and was applied to a spin-exchange relaxation-free (SERF) atomic magnetometer. Comparative experiments demonstrated that the unstabilized laser output exhibited <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2.8</mn><mo>%</mo></mrow></semantics></math></inline-formula> power fluctuations over a 500 s period, while the stabilized laser reduced this to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.2</mn><mo>%</mo></mrow></semantics></math></inline-formula>. Spectral density analysis confirmed suppressed frequency-domain fluctuations, indicating improved robustness against disturbances. Furthermore, the stabilized laser also reduced optical noise in SERF magnetometry, achieving a sensitivity of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>19.2</mn><mspace width="3.33333pt"></mspace><mi>fT</mi><mo>/</mo><msup><mi>Hz</mi><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msup></mrow></semantics></math></inline-formula>. These results validate that the method optimizes both time- and frequency-domain performance, thereby advancing high-precision SERF magnetometry.https://www.mdpi.com/2304-6732/12/6/573MEMS technologyliquid crystal variable retarderpower stabilityspin-exchange re-laxation-free atomic magnetometeroptical noise reductionmagnetometry sensitivity |
| spellingShingle | Yitong Li Wenfei Zhang Jianqi Yang Ying Liu Yueyang Zhai Application and Performance Improvement of an Optical Power Stabilization System Based on MEMS-LCVR in a SERF Atomic Magnetometer Photonics MEMS technology liquid crystal variable retarder power stability spin-exchange re-laxation-free atomic magnetometer optical noise reduction magnetometry sensitivity |
| title | Application and Performance Improvement of an Optical Power Stabilization System Based on MEMS-LCVR in a SERF Atomic Magnetometer |
| title_full | Application and Performance Improvement of an Optical Power Stabilization System Based on MEMS-LCVR in a SERF Atomic Magnetometer |
| title_fullStr | Application and Performance Improvement of an Optical Power Stabilization System Based on MEMS-LCVR in a SERF Atomic Magnetometer |
| title_full_unstemmed | Application and Performance Improvement of an Optical Power Stabilization System Based on MEMS-LCVR in a SERF Atomic Magnetometer |
| title_short | Application and Performance Improvement of an Optical Power Stabilization System Based on MEMS-LCVR in a SERF Atomic Magnetometer |
| title_sort | application and performance improvement of an optical power stabilization system based on mems lcvr in a serf atomic magnetometer |
| topic | MEMS technology liquid crystal variable retarder power stability spin-exchange re-laxation-free atomic magnetometer optical noise reduction magnetometry sensitivity |
| url | https://www.mdpi.com/2304-6732/12/6/573 |
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