Vol. 34, issue 07, article # 3

Oshlakov V. K., Bаbushkin P. A., Matvienko G. G. Spatiotemporal characteristics of a laser pulse when focusing in a two-component medium. // Optika Atmosfery i Okeana. 2021. V. 34. No. 07. P. . DOI: 10.15372/AOO20210703 [in Russian].
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Abstract:

A model of the dependence of the refractive index of a two-component medium of laser pulse propagation is suggested using the example of a mixture of dry air and water vapor. The model parameters are related to the physical characteristics of the laser pulse and propagation medium. The air refractive index and the related femtosecond laser pulse parameters (dispersion length, nonlinear coefficients, critical power, and nonlinear focus) are calculated for typical values of the volume fraction of water vapor in the atmosphere.

Keywords:

femtosecond pulse, dispersion, refractive index, nonlinear focus, water vapor

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