Volume 8, Issue 3, September 2020, Page: 51-60
Coherent Nonlinear Resonances of Saturated Absorption at Transitions from the Ground 1S0 Atomic State in the Spectroscopy of Unidirectional Waves
Aleksandr Chernenko, Institute of Semiconductor Physics SB RAS, Novosibirsk, Russia
Edward Saprykin, Institute of Automation and Electrometry SB RAS, Novosibirsk, Russia
Received: Jun. 30, 2020;       Accepted: Jul. 20, 2020;       Published: Aug. 19, 2020
DOI: 10.11648/j.ajop.20200803.11      View  155      Downloads  51
Abstract
The shapes of the saturated absorption resonances at transitions from the ground 1S0 atom state in a gas medium in the field of two unidirectional waves are investigated both analytically and numerically. It is shown for the first time that the spectra of nonlinear resonances are formed by processes in the two-and three-level V-schemes resulting from the degeneracy of the upper P transition state, are qualitatively different at the resonant transition and transitions to the more excited atom states. It is established that the physical causes for differences of these spectra are due to the different degree of branching of the radiation from the excited to the ground state (the degree of openness) of transition. The degree of openness of transition determines the amount of contributions of coherent processes to the resonance shapes both in the system of two levels (coherent population beats) and three levels (nonlinear interference effect).
Keywords
Nonlinear Spectroscopy, Saturated Absorption Resonance, Unidirectional Waves, Closed and Open Transitions
To cite this article
Aleksandr Chernenko, Edward Saprykin, Coherent Nonlinear Resonances of Saturated Absorption at Transitions from the Ground 1S0 Atomic State in the Spectroscopy of Unidirectional Waves, American Journal of Optics and Photonics. Vol. 8, No. 3, 2020, pp. 51-60. doi: 10.11648/j.ajop.20200803.11
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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