In this work, using the compact density matrix approach and iterative procedure, the effects of the two asymmetry parameters of the Pöschl–Teller quantum well (QW) on the nonlinear optical rectification (NOR), second harmonic generation (SHG), third harmonic generation (THG), inter-subband optical absorption coefficient (IOAC), and refractive index change (RIC) are studied. Numerical results reveal that the two asymmetry parameters $\nu$ and $\mu$ of the Pöschl–Teller QW have a great influence on the NOR, SHG, THG, IOACs, and RICs. The maximum asymmetry of the Pöschl–Teller confinement potential can be gotten by an optimized set of two $\nu$ and $\mu$ asymmetry parameters. If it is desired to obtain the NOR, SHG, THG, and total RIC (IOAC) with larger values, then a relatively small (large) value of $\mu$/$\nu$ should be employed. Significant high-order nonlinear can be obtained via a correct choice of the set of the two asymmetry parameters. The results of our study show that the Pöschl–Teller QW is a promising candidate for optoelectronic device applications.

在这项工作中，使用紧凑密度矩阵方法和迭代过程，Pöschl-Teller 量子阱(QW) 的两个不对称参数对非线性光学整流(NOR)、二次谐波产生 (SHG)、三次谐波产生的影响(THG)、子带间光吸收系数(IOAC) 和折射率变化 (RIC) 进行了研究。数值结果表明两个不对称参数$\nu$和$\mu$Pöschl-Teller QW 对 NOR、SHG、THG、IOAC 和 RIC 有很大影响。Pöschl-Teller 限制电位的最大不对称性可以通过两个优化的集合来获得$\nu$和$\mu$不对称参数。如果希望获得具有较大值的 NOR、SHG、THG 和总 RIC (IOAC)，则相对较小（较大）的值$\mu$/$\nu$应该被雇用。通过正确选择两个不对称参数的集合，可以获得显着的高阶非线性。我们的研究结果表明，Pöschl-Teller QW 是光电器件应用的有希望的候选者。