Light-pressure-induced line shape of the saturation resonance dip in an atomic gas and its influence on frequency measurements

A. A. Chernenko; A. V. Shishaev

doi:10.1117/12.484519

29 July 2002 Light-pressure-induced line shape of the saturation resonance dip in an atomic gas and its influence on frequency measurements

A. A. Chernenko, A. V. Shishaev

Author Affiliations +

Proceedings Volume 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life; (2002) https://doi.org/10.1117/12.484519
Event: Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, 2002, Novosibirsk, Russian Federation

Abstract

We report the results of studying the effect of the resonant light pressure force on the amplitude and frequency properties of the nonlinear susceptibility and well known absorption resonance dip occurring in optical saturation spectroscopy of two level atomic gas. On the basis of numerical solutions of the Liouville and Fokker-Plank equations the behaviour pattern of the velocity distribution function of a two-level atomic gas in relation to the saturation intensity and time of interaction with a strong resonant optical field was obtained. Time course of the velocity distribution function due to the action of spontaneous light pressure force leads to modification of the nonlinear susceptibility, absorption saturation resonant line form and to change of frequency dip relative to the atomic resonant frequency transition. The represented numerical modeling results explained qualitatively a number ofexperimental facts, that could not be explained before.

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A. A. Chernenko and A. V. Shishaev "Light-pressure-induced line shape of the saturation resonance dip in an atomic gas and its influence on frequency measurements", Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); https://doi.org/10.1117/12.484519

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