Open AccessMethod for stabilization of the microwave modulation index in order to suppress the light shift of the coherent population trapping resonances
Author(s) -
V. I. Yudin,
M. Yu. Basalaev,
А. В. Тайченачев,
Daba Radnatarov,
Valerii Andryushkov,
Sergey Kobtsev
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2067/1/012003
Subject(s) - trapping , jump , physics , position (finance) , population , signal (programming language) , microwave , modulation (music) , optics , resonance (particle physics) , gaussian , phase (matter) , atomic physics , quantum mechanics , computer science , acoustics , ecology , demography , finance , sociology , economics , biology , programming language
For the resonance of coherent population trapping (CPT), we show that in the case of a spatially inhomogeneous light shift (for example, due to the Gaussian transversal profile of the light beam intensity), the zero position of the error signal, formed by the use of phase-jump technique, depends on the integration time of the spectroscopic signal. Basing on this effect, we propose two-loop method to stabilize the microwave power at the point where the light shift vanishes.