Symmetry Violation of Time Reversal in High Order Nonlinear Stimulated Radiation and Absorption Processes of Light

Mei Xiaochun

Published Aug 9, 2003• 0 citations

Abstract

The stimulated radiation and absorption theory of light based on low order linear interaction is considered symmetrical in time reversal processes at present. It is provided in the paper that after high order nonlinear interaction between radiation fields and charged particles is considered, time reversal symmetry in the stimulated radiation and absorption processes would be violated. Based on revised theory, the non-equilibrium and nonlinear phenomena just as generation of laser, amplification of non-population inversion, self-induced transparency and self-induced absorption can be explained more rationally. Other nonlinear processes light such as multiple frequency, sum frequency and difference frequency, double stationary state, self-focusing and self-defocusing, double and multi-photon absorption, stimulated Raman and Brillouim scatterings, photon echo and so on are also enumerated and analyzed in the paper. The results show that most processes of nonlinear optics are violated time reversal symmetry obviously.

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