Analysis of THG modes for femtosecond laser pulse

Vyacheslav A. Trofimov; Pavel S. Sidorov

doi:10.1117/12.2267499

16 May 2017 Analysis of THG modes for femtosecond laser pulse

Vyacheslav A. Trofimov, Pavel S. Sidorov

Proceedings Volume 10228, Nonlinear Optics and Applications X; 102280B (2017) https://doi.org/10.1117/12.2267499
Event: SPIE Optics + Optoelectronics, 2017, Prague, Czech Republic

Abstract

THG is used nowadays in many practical applications such as a substance diagnostics, and biological objects imaging, and etс. With developing of new materials and technology (for example, photonic crystal) an attention to THG process analysis grow. Therefore, THG features understanding are a modern problem. Early we have developed new analytical approach based on using the problem invariant for analytical solution construction of the THG process. It should be stressed that we did not use a basic wave non-depletion approximation. Nevertheless, a long pulse duration approximation and plane wave approximation has applied. The analytical solution demonstrates, in particular, an optical bistability property (and may other regimes of frequency tripling) for the third harmonic generation process. But, obviously, this approach does not reflect an influence of a medium dispersion on the frequency tripling. Therefore, in this paper we analyze THG efficiency of a femtosecond laser pulse taking into account a second order dispersion affect as well as self- and crossmodulation of the interacting waves affect on the frequency conversion process. Analysis is made using a computer simulation on the base of Schrödinger equations describing the process under consideration.

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Citation Download Citation

Vyacheslav A. Trofimov and Pavel S. Sidorov "Analysis of THG modes for femtosecond laser pulse", Proc. SPIE 10228, Nonlinear Optics and Applications X, 102280B (16 May 2017); https://doi.org/10.1117/12.2267499

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