Shimiao Fan, Wenfeng Fan, Qi Yuan, Xiaoping Li, Hongyu Pei, Wei Quan, Lihong Duan, "Closed-loop atomic spin polarization detection based on EOAM modulation in K-Rb-21Ne co-magnetometers," Chin. Opt. Lett. 22, 121201 (2024)
- Chinese Optics Letters
- Vol. 22, Issue 12, 121201 (2024)
Fig. 1. Schematic of the closed-loop atomic spin polarization detection system. EOAM, electro-optic amplitude modulator; CO, coupler; PL, polarizer; λ/2, half-wave plate; PBS, polarizing beam splitter; PD, photodiode.
Fig. 2. Experimental setup of SERF co-magnetometer. TA, tapered amplifier; λ/4, quarter-wave plate; GL, Glan–Taylor prism.
Fig. 3. Testing of co-magnetometer angular velocity signal and scale factor based on closed-loop EOAM modulation detection system.
Fig. 4. Response testing of the closed-loop detection system to external perturbation. Case A: Using EOAM modulation only, with the closed-loop control system output turned off. Case B: The closed-loop EOAM modulation detection system designed in this Letter.
Fig. 5. Comparison of inertial measurement sensitivity among different detection methods.
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