Nonlinear polarization response of a gaseous medium in the regime of atom stabilization in a strong radiation field

作者：Volkova E A^*; Popov A M; Tikhonova O V

来源：Journal of Experimental and Theoretical Physics, 2013, 116(3): 372-380.

DOI：10.1134/S106377611303014X

The nonlinear polarization response of a quantum system modeling a silver atom in the field of high-intensity radiation in the IR and UV spectral ranges has been studied by direct numerical integration of a nonstationary Schrodinger equation. The domains of applicability of perturbation theory and polarization expansion in powers of the field intensity are determined. The contribution of excited atoms and electrons in a continuum to the atomic polarization response at the field frequency, which arises due to the radiation-induced excitation and photoionization processes, is analyzed. Features of the nonlinear response to an external field under conditions of atom stabilization are considered. DOI: 10.1134/S106377611303014X

• 出版日期2013-3