Review on birefringence in borates based on birefringence-active functional groups and arrangements  

作　　者：Qianzhen Zhang Ran An Zhihua Yang Xifa Long Shilie Pan Yun Yang 

机构地区：[1]Research Center for Crystal Materials,State Key Laboratory of Functional Materials and Devices for Special Environmental Conditions,Xinjiang Key Laboratory of Functional Crystal Materials,The Xinjiang Technical Institute of Physics&Chemistry,Chinese Academy of Sciences,Urumqi 830011,China [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China Chemistry》2024年第7期2155-2170,共16页中国科学（化学英文版）

基　　金：supported by Shanghai Cooperation Organization Science and Technology Partnership Program(2020E01039);the Scientific Instrument Developing Project,CAS(YJKYYQ20210033);CAS Youth Interdisciplinary Team(JCTD-2021–18);the West Light Foundation of CAS(2021-XBQNXZ-004);the Outstanding Youth Science Fund Project of Natural Science Foundation of Xinjiang(2022D01E90);Key Training Object of Talent Project of Urumqi。

摘　　要：As a fundamental parameter of the optical crystals,birefringence plays a vital role in many optical applications,such as phase modulation,light splitting,and polarization,especially the phase matching process of the nonlinear optical crystals.The big birefringence not only benefits to the miniaturization of related devices,but also broadens the phase-matching wavelength range of nonlinear optical crystals.The design and synthesis of crystals with large birefringence becomes a hot research topic due to its more and more important applications in the optical modulation and laser technology fields.Herein,crystals with birefringence greater than 0.05 in the borate system are reviewed and classified according to different birefringent active groups,and the relationship between structure and properties is thoroughly explored.It is hoped that this review will provide a clear understanding of what kinds of building units and arrangements would have more opportunity to get adequate birefringence in borate systems and provide the statistical references to encourage the emergence of better crystal materials with large birefringence.

关 键 词：BIREFRINGENCE BORATE optical functional crystal structural anisotropy arrangement of functional units 

分 类 号：O734[理学—晶体学]