Modulation induced frequency shifts in a CPT-based atomic clock

Details Modulation induced frequency shifts in a CPT-based atomic clock Modulation induced frequency shifts in a CPT-based atomic clock

2004-04-15

arxiv.org/abs/physics/0404076v1

JOSA B, 22, #2, 305-310 (2005).

Physics

Atomic Physics

14 pages, 7 figures

Scientific paper

10.1364/JOSAB.22.000305

We investigate systematic errors associated with a common modulation technique used for phase sensitive detection of a coherent population trapping (CPT) resonance. In particular, we show that modification of the CPT resonance lineshape due to the presence of off-resonant fields leads to frequency shifts which may limit the stability of CPT-based atomic clocks. We also demonstrate that an alternative demodulation technique greatly reduces these effects.

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