@inproceedings{f839a84786454f9fbf9f33a474422d3d,
title = "New method for enhancement of contrast of coherent population trapping resonance in Rb vapour",
abstract = "The present work presents a new method for enhancement of contrast of coherent population trapping resonance in Rb vapour based on feedback and fast digital processing of the error signal in the feedback loop. In the proposed method, when the frequency difference between the pump field components is detuned from the resonance of coherent population trapping, a linear combination of two measured values, - pump field power prior and after passing through the cell, - is stabilised. This parameter combination is stabilised through adjustment of the pump radiation power with an electrooptical amplitude modulator. The studied method is shown to improve CPT resonance contrast by more than two orders of magnitude, while also improving the signal-to-noise ratio more than two-fold. The possibilities and limitations of the proposed method for enhancement of CPT resonance contrast are analysed.",
keywords = "Atomic clock, Coherent population trapping resonance, Feedback spectroscopy, Rb, rubidium cell, Rb, DARK RESONANCES, LINE, atomic clock, coherent population trapping resonance, rubidium cell, feedback spectroscopy",
author = "Sergey Khripunov and Sergey Kobtsev and Daba Radnatarov and Ivan Popkov and Valeriy Andryushkov and Tatiana Steschenko and Vladimir Lunin and Yury Zarudnev",
year = "2017",
doi = "10.1117/12.2251522",
language = "English",
isbn = "978-1-5106-0680-7",
volume = "10119",
series = "Proceedings of SPIE",
publisher = "SPIE",
editor = "SM Shahriar and J Scheuer",
booktitle = "Slow Light, Fast Light, and Opto-Atomic Precision Metrology X",
address = "United States",
note = "Slow Light, Fast Light, and Opto-Atomic Precision Metrology X 2017 ; Conference date: 30-01-2017 Through 02-02-2017",
}