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Journal of Physics B Atomic Molecular and Optical Physics

Effect of temperature on quasiperiodic refractive index oscillations in optically dense medium with a closed excitation contour

К. А. Баранцев, Величко Елена Николаевна, A. N. Litvinov

Published Nov 19, 2014• 6 citations
Publisher

Abstract

A theory of a closed contour scheme of excitation ( Δ -scheme) of a three-level atom in an optically dense medium taking into account the effect of temperature is presented. It is shown that spatial quasiperiodic oscillations of the refractive index in this system decay with increasing temperature. The temperature range in which these oscillations are most pronounced is determined.

DOI
10.1088/0953-4075/47/24/245401

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A theory of a closed contour scheme of excitation ( Δ -scheme) of a three-level atom in an optically dense medium taking into account the effect of temperature is presented. It is shown that spatial quasiperiodic oscillations of the refractive index in this system decay with increasing temperature. The temperature range in which these oscillations are most pronounced is determined.
A closed contour of excitation (Δ-scheme) of a three-level atom in an optically dense medium under the action of two optical fields and a microwave field has been studied. It is found that phase relations between exciting fields in this medium play a determining role. It is established that, under certain conditions, in an optically dense Δ-atom medium exhibits a quasi-periodic dependence of the refractive index on the coordinate. The conditions under which this dependence is most pronounced are determined.