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Proceedings Paper

Non-linear excitation of atoms by ultrashort electromagnetic pulses
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Paper Abstract

The development of methods of generation of ultrashort pulses (USP) of femto- and attosecond duration ranges with controlled parameters necessitates the theoretical study of features of their interaction with a matter [1]. Among such features that do not exist in case of “long” pulses should first of all be the nonlinear dependence of the photoprocess probability W on the USP duration (τ) [2] as well as the dependence on the carrier phase with respect to the pulse envelope (φ) [3-4]. It should be noted that if the dependence of the probability W on the phase φ manifests itself either only for very short pulses, when ωτ < 1 (ω is carrier frequency of the pulse), or in case of a nonlinear photoprocess [3], the function W(τ) can differ from a linear function in the limit ωτ> 1 too for fields of moderate strength, when the perturbation theory is applicable [2].

Paper Details

Date Published: 27 April 2016
PDF: 7 pages
Proc. SPIE 9894, Nonlinear Optics and its Applications IV, 98941D (27 April 2016); doi: 10.1117/12.2227335
Show Author Affiliations
Valery A. Astapenko, Moscow Institute of Physics and Technology (Russian Federation)
Sergey V. Sakhno, Moscow Institute of Physics and Technology (Russian Federation)

Published in SPIE Proceedings Vol. 9894:
Nonlinear Optics and its Applications IV
Benjamin J. Eggleton; Neil G. R. Broderick; Alexander L. Gaeta, Editor(s)

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