By leveraging second-harmonic generation(SHG)capabilities,ultraviolet(UV)nonlinear optical(NLO)crystals can efficiently produce UV coherent light and are essential components for advancing UV solidstate laser systems....By leveraging second-harmonic generation(SHG)capabilities,ultraviolet(UV)nonlinear optical(NLO)crystals can efficiently produce UV coherent light and are essential components for advancing UV solidstate laser systems.Herein,two new bismuth phosphates,Rb_(1.32)Bi_(3.56)P_(2)O_(11)(Ⅰ)and K_(1.08)Bi_(3.64)P_(2)O_(11)(Ⅱ),were synthesized via a high-temperature melt method.Of these,Rb_(1.32)Bi_(3.56)P_(2)O_(11) exhibits a significant phase-matching SHG response(2.8×KDP)and large birefringence(0.062@532 nm,0.053@1064 nm),along with an expanded UV transmission window.Moreover,theoretical analyses revealed that the optimized optical polarizability of Rb_(1.32)Bi_(3.56)P_(2)O_(11) primarily arises from the cooperative effects of the onedimensional(1D)polycationic {Bi(2)Bi(2)×Bi(1)Bi(1)×}Bi(1)Bi(1)×rBi(2)Bi(2)×ibbons and[PO_(4)]tetrahedra.We believe that the work will provide a valuable strategy to design UV NLO materials with good performances.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.22475184,12264047)the Xinjiang Uygur Autonomous Region Nature Fund Key Project(2024D01D01)+4 种基金the Tianshan Talent Project of Xinjiang Uygur Autonomous Region of China(2022TSYCJU0004)the Xinjiang Major Science and Technology Project(2021A01001-3)the Xinjiang Uygur Autonomous Region Graduate Innovation Project(XJ2025G033 and XJ2024G084)the Xinjiang University Innovative Project for Outstanding Graduate Students(XJDX2025YJS178)the Bofeng plan of the outstanding graduate training program at Xinjiang University.
文摘By leveraging second-harmonic generation(SHG)capabilities,ultraviolet(UV)nonlinear optical(NLO)crystals can efficiently produce UV coherent light and are essential components for advancing UV solidstate laser systems.Herein,two new bismuth phosphates,Rb_(1.32)Bi_(3.56)P_(2)O_(11)(Ⅰ)and K_(1.08)Bi_(3.64)P_(2)O_(11)(Ⅱ),were synthesized via a high-temperature melt method.Of these,Rb_(1.32)Bi_(3.56)P_(2)O_(11) exhibits a significant phase-matching SHG response(2.8×KDP)and large birefringence(0.062@532 nm,0.053@1064 nm),along with an expanded UV transmission window.Moreover,theoretical analyses revealed that the optimized optical polarizability of Rb_(1.32)Bi_(3.56)P_(2)O_(11) primarily arises from the cooperative effects of the onedimensional(1D)polycationic {Bi(2)Bi(2)×Bi(1)Bi(1)×}Bi(1)Bi(1)×rBi(2)Bi(2)×ibbons and[PO_(4)]tetrahedra.We believe that the work will provide a valuable strategy to design UV NLO materials with good performances.
