Dynamics of the nonlinear optical second- and third-harmonic generation in quantum well due to hydrostatic pressure and temperature

School of Mechanics and Photoelectric Physics, Center for Fundamental Physics, Anhui University of Science and Technology - Huainan 232001, China

Received: 7 March 2024
Accepted: 15 May 2024

Abstract

We studied the effects of hydrostatic pressure and temperature on the second- and third-harmonic generation (SHG and THG) in semi-parabolic GaAs/Al_0.3Ga_0.7As quantum wells. By solving the Schrödinger equation numerically, we can determine the system's sub-band energy levels and 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. Notably, we explore the mechanisms underlying these interactions. These findings suggest a viable approach to adjust the nonlinear optical performance of GaAs/Al_0.3Ga_0.7As quantum system through the subtle interaction between hydrostatic pressure, temperature and structural parameters.