Liu, X.
, Kitching, J.
, Donley, E.
and Ivanov, E.
(2016),
Frequency shift mitigation in a cold-atom CPT clock, 2016 IEEE International Frequency Control Symposium, New Orleans, LA, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=920930
(Accessed October 13, 2025)
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Frequency shift mitigation in a cold-atom CPT clock
Published
Author(s)
, , , Eugene N. Ivanov
Abstract
An upgrade in the laser interrogation system for our cold-atom clock based on coherent population trapping has resulted in a reduced light shift. The new approach makes use of an electro-optic modulator to significantly reduce the phase coherence of the interrogation spectrum relative to what was achieved with our previous phase-locked loop approach. We present the impact of this improvement on the performance of the clock, for which the light shift was previously dominated by the incoherent light in the laser spectrum.Proceedings Title
2016 IEEE International Frequency Control Symposium
Conference Dates
May 9-13, 2016
Conference Location
New Orleans, LA, US
Pub Type
Conferences
Download Paper
Keywords
Phase-locked loop, coherent population trapping, light shift, AC Stark Shift, electro-optic modulator
Citation
Issues
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Created May 8, 2016, Updated April 19, 2022