Abstract
The theory of coherent population trapping resonance is developed for the finite linewidth of the laser radiation spectrum in an optically dense medium of Λ atoms in a cell with a buffer gas. Equations are derived for the atomic density matrix and laser emission spectrum transfer in a cell with working and buffer gases at a finite temperature. The dependence of the quality factor of coherent population trapping resonance on the linewidth of the laser radiation spectrum is studied by measuring transmitted radiation and fluorescence signals.
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Original Russian Text © K.A. Barantsev, E.N. Popov, A.N. Litvinov, 2015, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2015, Vol. 148, No. 5, pp. 869–882.
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Barantsev, K.A., Popov, E.N. & Litvinov, A.N. Influence of the finite linewidth of the laser radiation spectrum on the shape of the coherent population trapping resonance line in an optically dense medium with a buffer gas. J. Exp. Theor. Phys. 121, 758–769 (2015). https://doi.org/10.1134/S1063776115110011
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DOI: https://doi.org/10.1134/S1063776115110011