Abstract
The paper presents a theoretical study of the joint propagation of two elliptically polarized laser pulses resonantly interacting with quantum transitions in the lambda system of degenerate energy levels. The case of a weak high-frequency field in which the phenomenon of electromagnetically induced transparency occurs and the case of a powerful high-frequency field are considered. It is shown that, for both situations, there are optimal conditions imposed on the input pulses of interacting fields, under which the high-frequency field pulse undergoes the least absorption and distortion in the medium. The first condition gives a certain relation for the eccentricities of the polarization ellipses of the input fields. The second, less essential condition is the parallelism of the major axes of these ellipses. Both conditions are suggested by the theory of normal modes of electromagnetically induced transparency in the lambda system considered. Numerical simulation has shown that these conditions are quite well applicable not only in the case of weak high-frequency field, but also when high-frequency and low-frequency pulses have comparable peak intensities at the entrance to the medium.
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Translated by E. Chernokozhin
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Parshkov, O.M. Parallel Modes at a Pulsed Two-Frequency Resonance in the Lambda System of Degenerate Quantum Levels. Bull. Lebedev Phys. Inst. 49 (Suppl 1), S43–S52 (2022). https://doi.org/10.3103/S1068335622130097
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DOI: https://doi.org/10.3103/S1068335622130097