Infrared nonlinear optical materials with multiple strongly ionic cations

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Progress in Solid State Chemistry Pub Date : 2024-06-01 DOI:10.1016/j.progsolidstchem.2024.100458

Yang Wang , Yuqiang Fang , Ruiqi Wang , Fuqiang Huang

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Abstract

Infrared nonlinear optical (IR-NLO) crystals with excellent properties are in extensive demand due to their important role in IR laser technology. Currently, it remains a great challenge to obtain IR-NLO materials with both high second harmonic generation (SHG) response and large laser-induced damage thresholds (LIDTs). Some structural design strategies such as ‘structural/functional regions’ have been adopted to develop new high-performance NLO materials. The covalent structural region producing SHG signals has been extensively investigated, whereas the hard cations (alkali, alkaline-earth, and rare-earth metal ions) which are responsible for improving LIDTs, have been relatively neglected. Utilizing the concept of structural/functional regions, we focus on the relation between structural regions and SHG properties in chalcogenides. Combining different kinds of hard cations can change the dimension of structures and affect the stacking of NLO-active groups. Introducing more hard cations and constructing more complex ion regions help to increase the laser damage threshold. Based on the mentioned structural strategies, guidance will be provided for developing high-performance multiple-cation materials for IR NLO applications.

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含有多种强离子阳离子的红外非线性光学材料

具有优异特性的红外非线性光学（IR-NLO）晶体在红外激光技术中发挥着重要作用，因此需求量很大。目前，如何获得同时具有高二次谐波发生（SHG）响应和大激光诱导损伤阈值（LIDT）的红外非线性光学（IR-NLO）材料仍是一项巨大挑战。一些结构设计策略，如 "结构/功能区"，已被用于开发新的高性能 NLO 材料。产生 SHG 信号的共价结构区域已被广泛研究，而负责改善 LIDT 的硬阳离子（碱金属、碱土金属和稀土金属离子）则相对被忽视。利用结构/功能区的概念，我们重点研究了铬镧系元素中结构区与 SHG 特性之间的关系。结合不同种类的硬阳离子可以改变结构的尺寸，并影响 NLO 活性基团的堆积。引入更多的硬阳离子和构建更复杂的离子区域有助于提高激光损伤阈值。基于上述结构策略，我们将为开发用于红外 NLO 应用的高性能多阳离子材料提供指导。

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来源期刊

Progress in Solid State Chemistry 化学-无机化学与核化学

CiteScore

14.10

自引率

3.30%

发文量

期刊介绍： Progress in Solid State Chemistry offers critical reviews and specialized articles written by leading experts in the field, providing a comprehensive view of solid-state chemistry. It addresses the challenge of dispersed literature by offering up-to-date assessments of research progress and recent developments. Emphasis is placed on the relationship between physical properties and structural chemistry, particularly imperfections like vacancies and dislocations. The reviews published in Progress in Solid State Chemistry emphasize critical evaluation of the field, along with indications of current problems and future directions. Papers are not intended to be bibliographic in nature but rather to inform a broad range of readers in an inherently multidisciplinary field by providing expert treatises oriented both towards specialists in different areas of the solid state and towards nonspecialists. The authorship is international, and the subject matter will be of interest to chemists, materials scientists, physicists, metallurgists, crystallographers, ceramists, and engineers interested in the solid state.