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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Quantum well shape optimization by variational calculus: maximizing the Stark effect and quantum interference derived electro-optic susceptibility
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Quantum well shape optimization by variational calculus: maximizing the Stark effect and quantum interference derived electro-optic susceptibility

机译：通过变分微积分优化量子阱形状：最大化斯塔克效应和量子干扰衍生的电光磁化率

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摘要

A new method is proposed for semiconductor quantum well (QW) shape optimization in respect to the electro-optic coefficients. It relies on iterative solving of the system of coupled Schrodinger equations, which determine the wave functions of relevant states, and of Euler-Lagrange equations derived by applying the variational calculus to the target functional, with the starting potential supplied by the simulated annealing. Due to the combined use of the two methods, one may expect to get the globally optimal QW profile. Numerical example is presented for an Al_(x)Ga_(1-x)As based structure.
机译：针对电光系数，提出了一种用于半导体量子阱（QW）形状优化的新方法。它依赖于迭代Schrodinger方程组（确定相关状态的波函数）和Euler-Lagrange方程组的迭代求解，该方程通过将变分演算应用于目标函数而导出，而初始电势由模拟退火提供。由于两种方法的组合使用，因此可以期望获得全局最优的QW曲线。给出了基于Al_（x）Ga_（1-x）As的结构的数值示例。

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