摘要
We explore the impact of pumping beams with different transverse intensity profiles on the performance of the spinexchange relaxation-free(SERF) atomic magnetometers(AMs). We conduct experiments comparing the traditional Gaussian optically-pumped AM with that utilizing the flat-top optically-pumped(FTOP) method. Our findings reveal that the FTOP-based approach outperforms the conventional method, exhibiting a larger response, a narrower magnetic resonance linewidth, and a superior low-frequency noise performance. Specifically, the use of FTOP method leads to a 16% enhancement in average sensitivity within 1 Hz–30 Hz frequency range. Our research emphasizes the significance of achieving transverse polarization uniformity in AMs, providing insights for future optimization efforts and sensitivity improvements in miniaturized magnetometers.
作者
袁子琪
唐钧剑
林树东
翟跃阳
Ziqi Yuan;Junjian Tang;Shudong Lin;Yueyang Zhai(Key Laboratory of Ultra-Weak Magnetic Field Measurement Technology,Ministry of Education,School of Instrumentation and Optoelectronic Engineering,Beihang University,Beijing 100191,China;School of Physics,Beihang University,Beijing 100191,China;Hefei National Laboratory,Hefei 230088,China)
基金
Project supported by the National Natural Science Foundation of China (Grant No. 62303029)
the China Postdoctoral Science Foundation (Grant No. 2022M720364)
the Innovation Program for Quantum Science and Technology (Grant Nos. 2021ZD0300500 and 2021ZD0300503)。
