含共轭键的紫外非线性光学晶体  

π-Conjugated Ultraviolet Nonlinear Optical Crystals

作　　者：宋云霞 罗敏[2] 叶宁[2] SONG Yun-xia;LUO Min;YE Ning(College of Mathematics and Physics,Fujian University of Technology,Fuzhou 350108,China;Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China)

机构地区：[1]福建工程学院数理学院,福州350108 [2]中国科学院福建物质结构研究所,光电材料化学与物理重点实验室,福州350002

出　　处：《人工晶体学报》2019年第10期1782-1789,共8页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51890862,U1605245,51425205)

摘　　要：紫外非线性光学晶体是实现短波紫外光源输出的关键材料,目前短波紫外变频晶体主要依赖硼酸盐晶体,由于实际应用对晶体综合性能提出更高要求,而进一步发现新型硼酸盐非线性光学晶体难度不断增大,开拓新的材料体系显得尤为迫切。从硼酸盐结构与非线性光学效应关系可知,含有平面共轭基团的硼酸盐具有大的倍频系数、合适的双折射率和短的紫外截止边等特性,平面共轭基团是硼酸盐非线性光学晶体的核心功能基元。因此拓展平面共轭基团研究是探索新体系紫外非线性光学晶体材料的关键环节。基于基团的构效关系,我们团队率先提出以同样是具有平面三角共轭结构的碳酸盐、硝酸盐等化合物为研究对象,拓展紫外非线性光学晶体材料的探索范围。此外,近来我们团队把研究范围进一步拓展到了一些有机共轭体系,例如氰尿酸盐。本文将主要介绍我们团队近年来在碳酸盐、硝酸盐和氰尿酸盐紫外晶体探索方面取得的研究结果。UV nonlinear optical(NLO)crystals are very imporant materials for solid sate laser output in the UV region.Currently,only borate crystals with plannar BO 3 or B 3O 6 units are able to be used for UV frequency convertion.Development of new famlily is desired because it is more and more difficult to discover new NLO borate crystals,and,more demands are rasing from application.Based on the relationship between the microstructure and properties of the groups,we proposed that inorganic(CO 3)2-and(NO 3)-groups can be as new NLO active units for UV NLO crystals because they also haveπconjugated orbitals.Therefore,our group have carried out related work in carbonate and nitrate systems in recent years,which resulted in finding some excellent carbonates and nitrates NLO crystals.In addition,we have recently expanded the study field from inorganic to organicπ-conjugated systems,such as isocyanurates.This review will introduce the research results of our team in the field of UV NLO including carbonates,nitrates and cyanurates in recent years.

关 键 词：平面共轭基团 紫外 非线性光学晶体 晶体生长 

分 类 号：O7[理学—晶体学]