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(NH_(4))_(3)B_(11)PO_(19)F_(3):a deep-UV nonlinear optical crystal with unique[B_(5)PO_(10)F]_(∞)layers

查看全文 作　　者：Bingliang [1,2]Cheng;Zijian [1,2]Li;Yu [1,2]Chu;Abudukadi [1,2]Tudi;Miriding [1,2]Mutailipu;Fangfang [1,2]Zhang;Zhihua [1,2]Yang;Shilie [1,2]Pan 高影响力作者 机构地区：[1]CAS Key Laboratory of Functional Materials and Devices for Special Environments,Xinjiang Technical Institute of Physics and Chemistry of Chinese Academy of Sciences,Xinjiang Key Laboratory of Electronic Information Materials and Devices,Urumqi 830011,China;[2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China高影响力机构 出　　处：《National Science Review》索引2022年第9卷第8期,共6页高影响力期刊 基　　金：supported by the National Key R&D Program of China(2021YFA0717800);the National Natural Science Foundation of China(61875229,61922084 and 61835014);the West Light Foundation of Chinese Academy of Sciences(2020-JCTD-002);the Instrument Developing Project of Chinese Academy of Sciences(GJJSTD20200007)。 摘　　要：Deep-ultraviolet(DUV)nonlinear optical(NLO)crystals that can extend the output range of coherent light below 200 nm are pivotal materials for solid-state lasers.To date,KBe_(2)BO_(3)F_(2)(KBBF)is the only usable crystal that can generate DUV coherent light by direct second harmonic generation(SHG),but the layered growth habit and toxic ingredients limit its application.Herein,we report a new fluoroborophosphate,(NH_(4))_(3)B_(11)PO_(19)F_(3)(ABPF),containing four different functional units:[BO_(3)],[BO_(4)],[BO_(3)F]and[PO_(4)].ABPF exhibits a KBBF-like structure while eliminating the limitations of KBBF crystal.The unique[B_(5)PO_(10)F]_(∞)layers enhance ABPF’s performance;for example,it has a large SHG response(1.2×KDP)and a sufficient birefringence(0.088 at 1064 nm)that enables the shortest phase-matching wavelength to reach the DUV region.Meanwhile,the introduction of strong B-O-P covalent bonds decreases the layered growth habit.These findings will enrich the structural chemistry of fluoroborophosphate and contribute to the discovery of more excellent DUV NLO crystals. 关 键 词：deep-ultraviolet nonlinear optical materials KBBF-like structure fluoroborophosphate
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