| Abstract: | We study the effect of interminiband breakdown in a semiconductor quantum superlattice in a constant electric field and in
the field of a nonlinear wave whose intensities are directed along the superlattice axis. The problem has been solved in the
quasiclassical approximation for an arbitrary ratio between the widths of the allowed and forbidden minibands. In particular
cases, we have obtained formulas for the breakdown probability in the presence of only one field, as well as for a linear
wave and a solitary wave (soliton). It is shown that the probability of interminiband breakdown increases with the nonlinearity
parameter of the electromagnetic wave k. The absorption coefficient of the nonlinear wave is calculated for typical parameters
of the superlattice.
Pedagogical University, Volgograd, Russia. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 41, No.
6, pp. 758–766, June, 1998. |
