Transverse light-shift in a spin-exchange relaxation-free co-magnetometer: measurement, decoupling, and suppression

• DOI: 10.1364/oe.456937
• Publication Date: 2022-04-08T20:00:08Z
• Authors: Sixun Liu; Ruigang Wang; Linlin Yuan; Jiaqi Wu; Qi Yuan; Jun Zhu; Wenfeng Fan; Zhuo Wang; Pengcheng Du
• Keywords: Decoupling (probability)

The transverse light-shift can induce non-negligible polarization error in the output signal of spin-exchange relaxation-free (SERF) co-magnetometer. In this paper, a novel method for rapid measurement based on steady-state response co-magnetometer is proposed firstly, then sources compact SERF modeled and analyzed from three aspects: non-ideal linear probe laser, circular dichroism atomic spin ensembles, stress-induced birefringence effect cell wall. Furthermore, decoupling suppression methods degree (DOCP) regulation scheme presented, to realize introduced by whole cell, cancel it out with laser. Eventually, DOCP suggested paper achieves more than 67% ratio light-shift, short- long-term performance are improved due reduction coupling between laser power field. Moreover, measurement, provided also have potential be applied other sensors, such as magnetometers nuclear co-magnetometers.