Noise suppression in coherent population-trapping atomic clock by differential magneto-optic rotation detection

作者：Tan Bozhong; Tian Yuan; Lin Huifang; Chen Jiehua; Gu Sihong^*

来源：Optics Letters, 2015, 40(16): 3703-3706.

DOI：10.1364/OL.40.003703

We propose and investigate a scheme for differential detection of the magneto-optic rotation (MOR) effect, where a linearly polarized bichromatic laser field is coherent population-trapping (CPT)-resonant with alkali atoms, and discuss the application of this effect to CPT-based atomic clocks. The results of our study indicate that laser noise in a vertical cavity surface-emitting laser-based CPT atomic clock can be effectively suppressed by the proposed scheme. The proposed scheme promises to realize a packaged MOR-CPT atomic clock that has significantly better frequency stability coupled with similar power consumption, volume, and cost when compared with currently available packaged CPT atomic clocks.

• 出版日期2015-8-15
• 单位中国科学院武汉物理与数学研究所