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The optimization and stabilization of detuned probe light frequency to suppress electron spin polarization error in SERF co-magnetometer.
- Source :
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Sensors & Actuators A: Physical . Sep2023, Vol. 359, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
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Abstract
- Spin-exchange free-relaxation (SERF) co-magnetometer has promising applications in the field of inertial navigation and fundamental physics experiments since its coupled spin ensemble is capable of measuring rotation with ultra-high sensitivity. Electron spin polarization determines the performance of the SERF co-magnetometer directly. In this paper, it is found that there is a non-negligible coupling between the probe light frequency and electron spin polarization. A model of the polarization in relation to the probe light frequency for a hybrid pumping cell is established. This paper discovers the existence of a theoretical optimum frequency that enables a more stable polarization in the model, and an experimental verification is carried out. Experiments results show that when the SERF co-magnetometer operates at this optimization frequency, its short- and long-term stability is significantly enhanced. Further, based on this model, the detuned frequency stabilization technique is proposed. The long-term stability of the probe light frequency is also improved by 43.85% after closing the loop. [Display omitted] • In this paper, it is found that there is a non-negligible coupling between the probe light frequency and electron spin polarization. A model of the relationship between them is established. • It is finds that there is an optimal frequency which can significantly reduce the disturbance of probe system to the SERF co-magnetometer in the response model. • The detuned frequency stabilization technique is proposed based on the model and the long-term stability of frequency is improved by 43.85% after stabilization. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09244247
- Volume :
- 359
- Database :
- Academic Search Index
- Journal :
- Sensors & Actuators A: Physical
- Publication Type :
- Academic Journal
- Accession number :
- 164857753
- Full Text :
- https://doi.org/10.1016/j.sna.2023.114467