基于金属硫族化物的中红外非线性光学材料：结构-性能关系,Crystal Growth & Design

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基于金属硫族化物的中红外非线性光学材料：结构-性能关系
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2017-03-24 00:00:00 , DOI: 10.1021/acs.cgd.7b00214
Fei Liang _{1,

2} , Lei Kang _{1,

2} , Zheshuai Lin _{1,

2} , Yicheng Wu ₁

Affiliation

高性能的中红外（IR）非线性光学（NLO）材料对于将激光波长扩展到中红外区域至关重要，并且在许多民用和军事领域具有重要的技术应用。在过去的二十年中，金属硫族化物引起了极大的关注，因为它们中的许多具有大的NLO效应，宽的透明范围，适度的双折射和对激光损伤的高抵抗力。然而，主要由于难以在NLO效果和激光损伤阈值（LDT）之间取得良好的平衡，发现优质的中红外NLO金属硫属元素化物仍然是一个巨大的挑战。在这篇综述中，根据不同类型的微观构件对金属硫属元素化物进行了分类。这些组包括三角形平面单元，四面体金属中心单元，具有二阶John-Teller阳离子的多面体和具有立体化学活性的孤电子对阳离子，稀土类阳离子和/或卤素阴离子的多面体。结合可获得的实验数据和第一性原理计算，对这些微观结构对金属硫属元素化物中红外NLO性质的测定进行了总结和分析。从推导的结构-性质关系，讨论了具有良好的中红外NLO性能的新型金属硫属化物的搜索方向，特别是在实现大的NLO效果和高LDT之间的平衡方面。结合可获得的实验数据和第一性原理计算，对这些微观结构对金属硫属元素化物中红外NLO性质的测定进行了总结和分析。从推导的结构-性质关系，讨论了具有良好的中红外NLO性能的新型金属硫属化物的搜索方向，特别是在实现大的NLO效果和高LDT之间的平衡方面。结合可获得的实验数据和第一性原理计算，对这些微观结构对金属硫属元素化物中红外NLO性质的测定进行了总结和分析。从推导的结构-性质关系，讨论了具有良好的中红外NLO性能的新型金属硫属化物的搜索方向，特别是在实现大的NLO效果和高LDT之间的平衡方面。

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Mid-Infrared Nonlinear Optical Materials Based on Metal Chalcogenides: Structure–Property Relationship

Mid-infrared (IR) nonlinear optical (NLO) materials with high performance are vital to expanding the laser wavelengths into the mid-IR region and have important technological applications in many civil and military fields. For the last two decades metal chalcogenides have attracted great attention since many of them possess a large NLO effect, wide transparent range, moderate birefringence, and high resistance to laser damage. However, the discovery of superior mid-IR NLO metal chalcogenides is still a big challenge mainly due to the difficulty of achieving a good balance between the NLO effect and laser damage threshold (LDT). In this review, metal chalcogenides are catalogued according to the different types of microscopic building blocks. These groups include triangle planar units, tetrahedral metal-centered units, polyhedra with second-order John-Teller cations, and polyhedra with stereochemically active lone electron pairs cations, rare-earth cations, and/or halogen anions. The determinations of these microscopic structures on mid-IR NLO properties in metal chalcogenides are summarized and analyzed combined with available experimental data and first-principle calculations. From the deduced structure–property relationship, the searching directions for new metal chalcogenides that have good mid-IR NLO performances, especially for achieving the balance between large NLO effect and high LDT, are discussed.

更新日期：2017-03-24

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