Characteristics of Ramsey Resonance Signal in an Optically Pumped Cesium Atomic Clock

광펌핑 세슘원자 시계에서의 Ramsey 공진 특성

  • 이호성 (한국표준과학연구원 시간·주파수연구실)
  • Published : 1993.05.01

Abstract

We observed Ramsey resonance signals from an optically pumped cesium atomic clock and compared them with the theoretical results calculated from the Ramsey transition probabilities. The theoretical results were in good agreement with the experimental results when the weighting factor of $1/{\nu}$ was taken into account to the Maxwellian distribution of velocities in the atomic beam. It was also found that the clock transition signal of Rabi-Ramsey spectra can be greatly enhanced by using two lasers with the proper polarizations as pumping sources of cesium atoms.

광펌핑 세슘원자시계에서 Ramsey 공진신호를 관측하고, Ramsey 전이확률로 계산한 결과와 비교해 보았다. 이 때 원자의 속도분포는 Maxwell 속도분포에 $1/{\nu}$의 가중치를 고려한 경우가 실험치와 가장 잘 일치하였다. 그리고 편광이 조절된 두 대의 레이저를 펌핑용 광원으로 사용하면 Rabi-Ramsey 스펙트럼의 시계전이선의 신호를 크게 키울수 있다는 것을 알았다.

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