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Recent achievements on middle and far-infrared second-order nonlinear optical materials

机译：中远红外二阶非线性光学材料的最新研究进展

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The exploration and development of second-order nonlinear optical (NLO) materials in the middle- and far infrared (MFIR) region are important and high profile topics in the fields of NLO, solid-state chemistry and laser. Common MFIR NLO materials are chalcogenides, halides, and iodates, which have a wide MFIR transparent range and large NLO coefficients. This review summarizes recent achievements on MFIR NLO materials, and specifically focuses on their crystal structures and NLO properties. Compared to known materials, the common choice for cations are alkali-metal Li, Na, K, Rb and Cs, the coin-metal Ag, and the alkali-earth metal Ba. Exploring mixed-anions materials could be one of the most promising solutions to obtaining NLO materials with both large second-harmonic generation (SHG) intensities and high laser induced damage thresholds (LIDTs). This review also summarizes functional moiety theory to elucidate the design of promising NLO materials. (C) 2016 Elsevier B.V. All rights reserved.
机译：在中红外和远红外（MFIR）区域中对二阶非线性光学（NLO）材料的探索和开发是NLO，固态化学和激光领域中的重要且备受关注的话题。常见的MFIR NLO材料是硫属元素化物，卤化物和碘酸盐，它们具有较宽的MFIR透明范围和较大的NLO系数。这篇综述总结了在MFIR NLO材料方面的最新成就，并特别关注它们的晶体结构和NLO性能。与已知材料相比，阳离子的常见选择是碱金属Li，Na，K，Rb和Cs，硬币金属Ag和碱土金属Ba。探索混合阴离子材料可能是获得具有大的二次谐波生成（SHG）强度和高激光诱导损伤阈值（LIDT）的NLO材料的最有前途的解决方案之一。这篇综述还总结了功能部分理论，以阐明有前途的NLO材料的设计。 （C）2016 Elsevier B.V.保留所有权利。

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