Dynamics of the nonlinear optical second, and third harmonic generation in GaAs/Ga0.7Al0.3As quantum well due to hydrostatic pressure and temperature

Abstract

We studied the effects of hydrostatic pressure and temperature on the second and third harmonic generation (SHG and THG) of nonlinear optics semi-parabolic GaAs/Al0.3Ga0.7As quantum well. By solving the Schrödinger equation numerically, we can determine the system's subband energy levels and propagation wave functions, and then calculate its optical gain. The numerical simulation results show that both temperature and hydrostatic pressure can effectively improve the nonlinear optical performance of the system. As an interesting observation, we studied the mechanism of the two in this process. These findings highlight a feasible method to adjust the nonlinear optical performance of GaAs/Al0.3Ga0.7As quantum system through the subtle interaction between hydrostatic pressure, temperature and structural parameters.