Generalized analytical and numerical modeling of optical second harmonic generation in anisotropic crystals and complex heterostructures using ♯SHAARP package
Generalized analytical and numerical modeling of optical second harmonic generation in anisotropic crystals and complex heterostructures using ♯SHAARP package
复制标题
使用 SHAARP 软件包对各向异性晶体和复杂异质结构中的光学二次谐波产生进行广义分析和数值建模
DOI：
10.1117/12.2676223
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Gopalan, Venkatraman
中科院分区：
文献类型：
--
作者：
Zu, Rui;Wang, Bo;He, Jingyang;Weber, Lincoln;Wang, Jianjun;Chen, Long-Qing;Gopalan, Venkatraman
光学二次谐波是一种非线性光学效应，广泛应用于非线性光学显微镜和激光频率转换。非线性光学响应的封闭解析解对于评估光学性质未知的新材料的光学响应是必不可少的。因此，在现有的分析方法中采用了许多近似，如慢变近似、非线性偏振的弱反射、透明介质、高晶体学对称性、Kleinman对称性、晶体容易沿沿着高对称方向取向、相位匹配条件以及非线性波之间的干涉可以忽略不计等，这些都可能导致所报道的材料性质产生很大的误差。为了避免这些近似，我们开发了一个开源软件包，名为各向异性旋转偏振法的二次谐波分析（Second Harmonic Analysis of Anisotropic Rotational Polarimetry，缩写为SHAARP），用于单界面（Si）和均匀晶体的多层（ml）。的可靠性和准确性建立了实验基准与二次谐波偏振和制造商条纹预测从包使用标准材料。SHAARP.si和SHAARP.ml分别通过GitHub https://github.com/Rui-Zu/SHAARP和https：//github.com/bzw133/SHAARP.ml提供。
Optical Second Harmonic Generation (SHG) is a nonlinear optical effect widely used for nonlinear optical microscopy and laser frequency conversion. The closed-form analytical solution of the nonlinear optical responses is essential for evaluating the optical responses of new materials whose optical properties are unknown a priori. Many approximations have therefore been employed in the existing analytical approaches, such as slowly varying approximation, weak reflection of the nonlinear polarization, transparent medium, high crystallographic symmetry, Kleinman symmetry, easy crystal orientation along a high-symmetry direction, phase matching conditions and negligible interference among nonlinear waves, which may lead to large errors in the reported material properties. To avoid these approximations, we have developed an open-source package named Second Harmonic Analysis of Anisotropic Rotational Polarimetry (♯SHAARP) for single interface (si) and in multilayers (ml) for homogeneous crystals. The reliability and accuracy are established by experimentally benchmarking with both the SHG polarimetry and Maker fringes predicted from the package using standard materials. SHAARP.si and SHAARP.ml are available through GitHub https://github.com/Rui-Zu/SHAARP and https://github.com/bzw133/SHAARP.ml, respectively.
影响因子：
41.2
作者：
Stoica, V. A.;Laanait, N.;Freeland, J. W.
通讯作者：
Freeland, J. W.