Feedback enhancement of the amplitude of dynamically excited coherent population trapping resonance in Rb vapour

Autor:	Sergey Kobtsev, Valeriy Andryushkov, Sergey Khripunov, Tatiana Steschenko, Maxim Basalaev, Valery Yudin, Alexey V. Taichenachev, Daba Radnatarov, Ivan Popkov
Rok vydání:	2016
Předmět:	education.field_of_study Chemistry Population Resonance Feedback loop Radiation 01 natural sciences Atomic clock 010309 optics Amplitude Excited state 0103 physical sciences Atomic physics 010306 general physics education Excitation
Zdroj:	Quantum and Nonlinear Optics IV.
ISSN:	0277-786X
DOI:	10.1117/12.2247794
Popis:	This work reports on possibilities of contrast enhancement of dynamically excited coherent population trapping (CPT) resonance in 87Rb vapour arising from application of feedback methods. Controlling the bichromatic pump radiation power through a feedback loop that stabilises Rb atom luminescence when scanning the frequency difference of the bichromatic pump radiation resulted in a more than an order-or-magnitude improvement in the amplitude of the CPT resonance at scanning frequencies over 100 Hz. It is established that the excursion of the pump radiation power controlled by the feedback loop under dynamic excitation is by an order of magnitude smaller than that under quasistationary excitation at scan frequencies < 1 Hz.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1ae57e4f9c13766e5be3fd8a5f13f650 https://doi.org/10.1117/12.2247794 Zobrazit plný text záznamu