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Theory of spectra of coherent four-photon scattering with one-photon resonances due to excited and autoionizing atomic states
Author(s): Nikolai I. Koroteev; A. N. Naumov; Alexei M. Zheltikov
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Paper Abstract

Coherent four-photon scattering of light due to excited and autoionizing states of atomic systems is considered. We analyze the influence of one-photon resonances at the frequency of the anti-Stokes signal and at the frequency of the pump wave on the shape of the spectrum of four-photon scattering. We derive analytical expressions for the line shapes of four-photon scattering involving one-photon resonances with allowance for phase-matching conditions and variation in the populations of excited states for limiting regimes of tight focusing and strong absorption in a medium with a cubic nonlinearity. The calculated spectra of four-photon scattering include the interference of resonant and nonresonant components of the third-order nonlinear susceptibility with allowance for one-photon saturation. We develop a method for normalizing experimental spectra of four-photon scattering with one-photon resonances that takes into account distortion of spectral lines due to the influence of phase mismatch and one- photon absorption.

Paper Details

Date Published: 10 May 1996
PDF: 11 pages
Proc. SPIE 2797, Nonlinear Spectroscopy and Ultrafast Phenomena, (10 May 1996); doi: 10.1117/12.239788
Show Author Affiliations
Nikolai I. Koroteev, Moscow State Univ. (Russia)
A. N. Naumov, Moscow State Univ. (Russia)
Alexei M. Zheltikov, Moscow State Univ. (Russia)

Published in SPIE Proceedings Vol. 2797:
Nonlinear Spectroscopy and Ultrafast Phenomena
Vladimir V. Shuvalov; Alexei M. Zheltikov, Editor(s)

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