EFFECT OF INTENSE LASER FIELD ON THE NONLINEAR OPTICAL SUSCEPTIBILITIES IN MODIFIED-PÖSCHL–TELLER QUANTUM WELL

Abstract

In this paper, the effect of high-frequency laser fields on a symmetric Modified-Pöschl–Teller (MPT) potential is studied by the laser dressing parameter. The magnitude of the laser dressing parameter is determined by the intensity and the frequency of the laser field. The well depth decreases with increasing laser dressing parameter. The symmetric MPT potential becomes asymmetric under an applied electric field. In this well the optical absorption coefficients, the changes in refractive indices, and the second-order susceptibilities such as the nonlinear optical rectification (NOR) and the second harmonic generation (SHG) are calculated using the density matrix method. The nonlinear susceptibilities are found to get reduced in the laser-driven potential.