[ABa2Cl][Ga4S8] (A = Rb, Cs):通过聚替代诱导的非线性光学 (NLO) 功能性动机排序获得的宽频非线性光学材料
Bin-Wen Liu1, Xiao-Ming Jiang1, Hui-Yi Zeng1
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
Journal of the American Chemical Society
|May 30, 2020
概括
研究人员开发了一种新的战略,将中心对称材料转化为非中心对称材料,为可见光和红外应用创造出具有强大性能的新型非线性光学 (NLO) 材料.
科学领域:
- 材料科学
- 固态化学
- 光电子产品
背景情况:
- 非中心对称性 (NCS) 对二次非线性光学 (NLO) 材料至关重要.
- 现有的NLO材料通常具有透明度范围或激光损伤值的限制.
- 开发具有增强NLO特性的新NCS材料仍然是一个关键挑战.
研究的目的:
- 引入一种新的聚替代诱导的策略,用于将中心对称 (CS) 材料转化为NCS材料.
- 合成和描述新的NCS盐含量素.
- 研究合成材料的NLO特性和结构特性关系.
主要方法:
- 应用于CS RbGaS2的多离子替代策略
- 新型NCS盐含量素的合成:[ABa2Cl][Ga4S8] (A = Rb, Cs).
- 结构和光学特性,包括第二波生成 (SHG) 和激光诱导损伤值 (LIDT).
主要成果:
- 成功合成了两个新的NCS化合物:[RbBa2Cl][Ga4S8]和[CsBa2Cl][Ga4S8].
- 呈现出强烈的相匹配SHG强度 (10.4-15.3xKDP在1064nm;0.9-1.0xAGS在1910nm).
- 已证明高LIDTs (11-12xAGS) 和宽透明窗口,表明适用于可见和红外NLO应用.
结论:
- 聚酸替代诱导的CS-NCS转换是设计新NLO材料的有效方法.
- 通过非中心聚合物模拟的T2超四面体Ga4S10图案的有序包装,是NLO突出的性能.
- 这些新材料为先进的NLO应用提供了一个有前途的平台.
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