The self-diffraction and SBS of counterpropagating light waves in absorbing media

F. P. Mattar

M. I. Dykman, Georgiy G. Tarasov

G. N. Vinokurov

O. P. Zaskal'Ko, A. A. Zozulya, N. N. Panaioti +1 more

A study was made of the characteristics of self-diffraction of opposite optical waves in the case of a thermal mechanism of grating formation. The main factor limiting the self-diffraction efficiency was found to be a low-threshold absolute instability of the optical wave due to stimulated Brillouin scattering. The conditions were found under which the radiation generated by stimulated Brillouin scattering had a high spatial and temporal coherence.

T. V. Radina

Summary form only given. Results are presented of theoretical studies into the resonances of the saturated absorption and saturated dispersion in an external absorption cell. The theory has been worked out by means of combining methods of mathematical theory of diffraction and quantum mechanical method for computing the polarization of active media. This made it possible for the first time to find a self-consisting spatial solution of the density matrix equation for the two-level system and the Helmholtz equation for electromagnetic field and to solve the problem of propagation of two counterpropagating monochromatic waves though an absorbing nonlinear medium taking into consideration the transverse transit-time effect.

Е. В. Ивакин, I. P. Petrovich, Alexander S. Rubanov