The propagation of ultrashort laser pulses in phototropic media

Vladislav Yu. Gribkov; Rimma Sh. Zatrudina

doi:10.1117/12.2523332

3 June 2019 The propagation of ultrashort laser pulses in phototropic media

Vladislav Yu. Gribkov, Rimma Sh. Zatrudina

Proceedings Volume 11066, Saratov Fall Meeting 2018: Laser Physics, Photonic Technologies, and Molecular Modeling; 110660H (2019) https://doi.org/10.1117/12.2523332
Event: International Symposium on Optics and Biophotonics VI: Saratov Fall Meeting 2018, 2018, Saratov, Russian Federation

Abstract

In this paper, the propagation of nanosecond laser pulses in various media with reverse saturable absorption is studied by numerical methods. Numerical simulation of the propagation of nanosecond laser pulses in a three-level medium with reverse saturable absorption was carried out using the classical transport equation for the case of incoherent nonlinear interaction of radiation with the medium described by the proposed three-level model. The degree of pulse deformation in such media is estimated. It is shown that with an increase in intensity, the pulse begins to deform, the pulse front shortens, the trailing edge becomes longer, the asymmetry coefficient increases. An additional maximum begins to form during a trailing edge with a further increase in intensity. As the additional maximum increases, the asymmetry coefficient monotonously decreases to negative values.

Citation Download Citation

Vladislav Yu. Gribkov and Rimma Sh. Zatrudina "The propagation of ultrashort laser pulses in phototropic media", Proc. SPIE 11066, Saratov Fall Meeting 2018: Laser Physics, Photonic Technologies, and Molecular Modeling, 110660H (3 June 2019); https://doi.org/10.1117/12.2523332

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