Abstract
ABSTRACT The dynamics of interaction of laser radiation resonant with the transitions of D 2 line in atomic Cs 133 in the presence of an external magnetic field is studied. Populations of levels and dynamics of resonant fluorescence at scanning frequency of the laser radiation with linear and circular polarizations are considered. Keyword: Atomic vapor, laser radiation, resonant fluorescence, magnetic field. 1. INTRODUCTION Investigation of population of levels and resonant fluorescence of atoms in a gas medium is one of basic lines in optics. Creation of tunable lasers with a small spectral radiation width (~50 MHz) has stimulated a further development of the laser spectroscopy of rarefied atomic vapors, allowing one to study the processes involving the hyperfine structure levels of atoms. An external magnetic field essentially changes the dispersive and absorption properties of atomic systems which causes various magnetooptical effects in the resonant interaction of a laser radiation with atoms. The magnetooptical effects of primary interest are a magnetic-field-induced polarization plane rotation in a medium (Faraday effect), splitting of spectral lines in a magnetic field (Zeeman effect), as well as a change of the directional pattern and decrease in the polarization degree of light with a resonant frequency in a weak magnetic field (Hanle effect). A scientific and practical importance of the mentioned processes has stimulated theoretical and experimental investigations of the interaction of laser radiation with atoms and magneto optical phenomena
Published Version
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