Multipulse Ramsey-CPT interference fringes for the 87Rb clock transition
Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences - Wuhan 430071, PRC
2 National Laboratory for Optoelectronics - Wuhan 430074, PRC
3 Department of Physics, Tsinghua University - Beijing 100084, PRC
Accepted: 27 February 2012
Multipulse Ramsey-coherent population trapping (CPT) interference is implemented in a compact 87Rb atomic vapor cell. With the addition of an acousto-optic modulator (AOM), a fully integrated vertical-cavity surface-emitting laser (VCSEL) is slaved to operate in pulsed mode with precise temporal control. Our study reveals interesting characteristics and provides valuable insights into the application of Ramsey-CPT interference fringes for low-cost atomic clocks.
PACS: 32.80.Qk – Coherent control of atomic interactions with photons / 42.62.Fi – Laser spectroscopy / 06.30.Ft – Time and frequency
© EPLA, 2012