准相位匹配深紫外非线性光学晶体研究进展  

Research progress of quasi-phase matching deep-ultraviolet nonlinear optical crystals

作　　者：单排 王祖建[1,2] 苏榕冰 何超[1,2] 杨晓明 龙西法 SHAN Pai;WANG Zujian;SU Rongbing;HE Chao;YANG Xiaoming;LONG Xifa(Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350108,China)

机构地区：[1]中国科学院福建物质结构研究所,中国科学院光电材料化学与物理重点实验室,福建福州350002 [2]中国福建光电信息科学与技术创新实验室,福建福州350108

出　　处：《量子电子学报》2021年第2期180-184,共5页Chinese Journal of Quantum Electronics

基　　金：(国家自然科学基金面上项目和青年项目,11974349,11904362,51902307)。

摘　　要：深紫外非线性光学晶体是深紫外全固态激光器的关键部件。由于带隙、非线性光学系数、双折射率等因素的限制,除KBe_(2)BO_(3)F_(2)晶体外,现有非线性光学晶体皆难以通过相位匹配实现深紫外激光输出。基于准相位匹配原理实现深紫外激光输出是解决深紫外非线性光学晶体相位匹配问题的新思路。综述了氟化钡镁(BaMgF_(4))晶体、镁方硼石(Mg_(3)B_(7)O_(13)Cl)晶体、硼锗酸镧(LaBGeO_(5))晶体的特性,并介绍了这些晶体基于准相位匹配原理应用于激光输出的研究进展。最后提出了有关准相位匹配深紫外非线性光学晶体研究的建议,并进行了展望。Deep-ultraviolet(DUV)nonlinear optical(NLO)crystal is a key material for the solid-state lasers to generate DUV coherent lights.Due to the limit of band gap,NLO coefficient and birefringence,the existing NLO crystals are difficult to generate DUV coherent lights by phase matching,except KBe_(2)BO_(3)F_(2) crystal.It’s a new idea to solve the phase matching problem of DUV NLO crystals based on the quasi-phase matching principle.A detailed description of properties of BaMgF_(4) crystal,Mg_(3)B_(7)O_(13)Cl crystal and LaBGeO_(5) crystal,and their applications on the generation of DUV coherent lights based on the quasi-phase matching principle are introduced.Finally,the suggestion and prospect on DUV quasi-phase matching crystals are presented.

关 键 词：非线性光学 铁电性 准相位匹配 深紫外 

分 类 号：O437[机械工程—光学工程]