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Soviet Journal of Quantum Electronics

Emission of radiation from atoms colliding with particles polarized by a laser field

Sergei G Rautian, Anatolii M. Shalagin

Published Apr 30, 1976• 0 citations
Publisher

Abstract

A theoretical analysis is made of the polarization of atomic states (inhomogeneous distribution over magnetic sublevels) induced by collisions with particles polarized by a laser field. The transfer of polarization may be observed by investigating the polarization of the spontaneous radiation emitted from atoms. The polarization tensor of such spontaneous radiation is calculated. A close relationship between the components of this tensor and the characteristics of an elementary scattering event is established.

DOI
10.1070/qe1976v006n04abeh011133

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A theoretical analysis is made of the resonant interaction between a traveling monochromatic light wave of arbitrary intensity and polarization and the 1/21/2 and 10 transitions in gas atoms in a magnetic field. An analysis is made of the influence of atomic collisions and coherence of the Zeeman sublevels of the terms on the structure of nonlinear magnetooptic resonances in the amplitude and polarization characteristics of the wave. Some features of nonlinear magnetooptic resonances for laser excitation of atoms from the ground state are noted. A study is made of the Faraday rotation and self-rotation of the polarization ellipse of the radiation as a function of the detuning of the wave frequency, the saturation parameter, and the optical density of the gas. The stability of the polarization of light in the medium is discussed. It is noted that these laws may be used to analyze and control the radiation characteristics of lasers and amplifiers when the level of saturation of a resonant gaseous medium in a magnetic field is high.