SOME ASPECTS OF NONLINEAR OPTICS OF SEMICONDUCTOR-LASERS

The study of heterojunction laser based on an analogue of the quantum mechanical Schrodinger equation and on equation describing light propagation in inhomogeneons media is developed. The dependence of the complex dielectric constant in the plane of p-n junction epsilon(y) is described in the form of Epstein layer, analogous to the quantum mechanical Eckart potential. A new parameter of an active stripe (the complex reduced width) is introduced and is used to tabulate, in the form of 3-dimensional graphs. the characteristics of wavefronts and directional patterns of emission of heterojunction lasers as well as mode coupling coefficients in a model describing a longitudinal in homogeneous laser in the form of two (or several) end coupled homogeneous stripes. The comparison with the experimental data at the different laser pumping currents is given. For these model analogues of Franck-Condon principle and Ramsauer effect are formulated and the later was proposed to use for active control of spatial distribution of laser emission.