Theory of frequency modulation spectroscopy of coherent dark resonances |
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| Authors: | Yu V Vladimirova B A Grishanin V N Zadkov V Biancalana G Bevilacqua Y Dancheva L Moi |
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| Institution: | (1) International Laser Center, Moscow State University, Moscow, 119899, Russia;(2) University of Siena, Siena, 53100, Italy |
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| Abstract: | The interaction of a three-level atom in the A configuration with a frequency-modulated (FM) field is analyzed theoretically for the first time. The two-frequency model for solving the problem of frequency modulation spectroscopy of coherent dark resonances is described and analyzed for a three-level A system. The effectiveness of the two-frequency model is demonstrated by comparing the results obtained using this model with the results of solving the exact problem of interaction of a A system with an FM field, which can be solved by the density matrix method. It is shown that the simple two-frequency model corresponds to the exact solution and is in qualitative agreement with experimental data. |
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