Nonlinear properties of optically dense medium excited by multifrequency laser radiation
Peter the Great St. Petersburg Polytechnic University, Department of theoretical physics, 29 Polytechnicheskaia str., Saint-Petersburg, 195251 Russia
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Published online: 31 October 2017
This work is devoted to nonlinear effects in the atomic medium excited by multifrequency laser radiation. We have considered collective light scattering in the optically dense medium in conditions of coherent population trapping. Propagation of intermode correlation coefficient was calculated and it was found that correlation can increase in the medium. Light shifts of the coherent population trapping resonances and ways of their suppression were analyzed. Propagation of radiation in the medium with closed excitation scheme was investigated.
© The Authors, published by EDP Sciences, 2017
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