Possibility of control of propagation regime in medium with cubic nonlinearity for chirped femtosecond pulse under the temporal dispersion of nonlinear response

Vyacheslav A. Trofimov; Aleksey G. Volkov

doi:10.1117/12.786939

15 January 2008 Possibility of control of propagation regime in medium with cubic nonlinearity for chirped femtosecond pulse under the temporal dispersion of nonlinear response

Vyacheslav A. Trofimov, Aleksey G. Volkov

Author Affiliations +

Proceedings Volume 6985, Fundamentals of Laser Assisted Micro- and Nanotechnologies; 698504 (2008) https://doi.org/10.1117/12.786939
Event: Fundamentals of Laser Assisted Micro- and Nanotechnologies, 2007, St. Petersburg, Russian Federation

Abstract

This report deals with self-focusing of axial symmetric laser beam in Kerr medium with the temporal dispersion of nonlinear response. Laser beam propagation is described by so-called generalized nonlinear Schrödinger equation in 3D case. The essential feature of this equation is a term, which contains a time derivation from nonlinear response. As a re-sult, a group velocity of wave packet depends on laser pulse intensity. On the other hand, as well known, self-focusing of an axial symmetric laser beam results in unlimited growth of its intensity for the picoseconds diapason of pulse duration. Action of both factors gives a new quality of laser beam propagation. Its main feature is a possibility to control of self-action for chirped laser pulse. Under certain conditions, we can easy to change regime of self-focusing to opposite one. Temporal dispersion of nonlinear response can be the main nonlinear response of medium under the laser light propagation.

Citation Download Citation

Vyacheslav A. Trofimov and Aleksey G. Volkov "Possibility of control of propagation regime in medium with cubic nonlinearity for chirped femtosecond pulse under the temporal dispersion of nonlinear response", Proc. SPIE 6985, Fundamentals of Laser Assisted Micro- and Nanotechnologies, 698504 (15 January 2008); https://doi.org/10.1117/12.786939

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