Modulation-induced frequency shifts in a coherent-population-trapping-based atomic clock
JOSA B, Vol. 22, Issue 2, pp. 305-310 (2005)
http://dx.doi.org/10.1364/JOSAB.22.000305
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Abstract
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 line shape due to the presence of off-resonant fields leads to frequency shifts that may limit the stability of CPT-based atomic clocks. We also demonstrate that an alternative demodulation technique greatly reduces these effects.
© 2005 Optical Society of America
OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(020.3690) Atomic and molecular physics : Line shapes and shifts
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(300.6380) Spectroscopy : Spectroscopy, modulation
Citation
David F. Phillips, Irina Novikova, Christine Y.-T. Wang, Ronald L. Walsworth, and Michael Crescimanno, "Modulation-induced frequency shifts in a coherent-population-trapping-based atomic
clock," J. Opt. Soc. Am. B 22, 305-310 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-2-305
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