Zhou Ming-shuai, Ma Jun-chao, Zhang Chao, Qin Yi-qiang
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, China.
Opt Express. 2012 Jan 16;20(2):1261-7. doi: 10.1364/OE.20.001261.
A finite difference method in real space is presented for calculating nonlinear optical processes in two-dimensional optical superlattices. The focused second-harmonic generation under the local quasi-phase-matched condition is calculated as an example. The field distribution of both the fundamental and the harmonic wave can be simulated well using this method, and the result agrees well with previous theoretical predictions and experimental studies. It is shown that this method is a simple and rapid technique to analysis nonlinear processes in optical superlattices.
提出了一种实空间有限差分方法，用于计算二维光学超晶格中的非线性光学过程。以局部准相位匹配条件下的聚焦二次谐波产生为例进行了计算。利用该方法可以很好地模拟基波和谐波的场分布，结果与先前的理论预测和实验研究吻合良好。结果表明，该方法是一种分析光学超晶格中非线性过程的简单快速技术。
