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

  • Tan B
  • Tian Y
  • Lin H
 et al. 
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Abstract

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.

Author-supplied keywords

  • Coherent optical effects
  • Faraday effect
  • Spectroscopy
  • nonlinear

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Authors

  • Bozhong Tan

  • Yuan Tian

  • Huifang Lin

  • Jiehua Chen

  • Sihong Gu

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