Space-temporal transient phenomena under coherent excitation of quantum systems in anisotropic crystals

Evgueni F. Martynovich; E. E. Martynovich; S. I. Polityko

doi:10.1117/12.328225

21 October 1998 Space-temporal transient phenomena under coherent excitation of quantum systems in anisotropic crystals

Evgueni F. Martynovich, E. E. Martynovich, S. I. Polityko

Proceedings Volume 3485, 11th International Vavilov Conference on Nonlinear Optics; (1998) https://doi.org/10.1117/12.328225
Event: Eleventh International Vavilov Conference on Nonlinear Optics, 1997, Novosibirsk, Russian Federation

Abstract

Non-stationary mechanisms of spatial modulation of luminescence intensity in anisotropic quantum systems within birefringent crystals under their interaction with ultrashort polarized laser pulses were studied. We have found connection between this phenomenon and phase relaxation of excited quantum systems. We have as well grounded a new method for investigation of coherency of quantum systems based on study of characteristic properties of modulation phenomena. It was shown that the influence of the frequency dispersion on the clarity of the modulation picture in insignificant at durations of 100 fs and greater, even for crystals with strong dispersion. Due to the existence of chirp in femtosecond pulses exciting the luminescence, modulation period in instant distribution of absorbed power decreases over distance. In the time-integrated picture of spatial distribution of luminescence intensity, the rate of decrease of modulation depth grows. This leads to new possibilities in experimental investigation of the value of chirp of femtosecond pulses.

Citation Download Citation

Evgueni F. Martynovich, E. E. Martynovich, and S. I. Polityko "Space-temporal transient phenomena under coherent excitation of quantum systems in anisotropic crystals", Proc. SPIE 3485, 11th International Vavilov Conference on Nonlinear Optics, (21 October 1998); https://doi.org/10.1117/12.328225

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