Nonlinear intersubband transitions in asymmetric double quantum wells as dependent on intense laser field

Abstract

In this study, for asymmetric double quantum well (ADQW) the linear and nonlinear intersubband optical absorption coefficients and the refractive index changes are examined as dependent on the intense laser field (ILF). The obtained results display that the location and the size of all absorption coefficients and refractive index change depend on ILF and the asymmetric parameter. Also, I showed that ILF provides an important effect on the electronic and optical properties of ADQW, and the changes of the energy levels and the dipole moment matrix elements are dependent on the shape of the confinement potential. Such effects can supply methods to drive tunable semiconductor lasers, which may be tailored by quantum potential well parameters and ILF values.