二次谐波产生
八面体
激光器
非线性光学
材料科学
钨
Crystal(编程语言)
调制(音乐)
谐波
结晶学
晶体结构
非线性系统
光电子学
光学
化学
物理
冶金
量子力学
声学
程序设计语言
计算机科学
作者
Hong‐Xin Tang,Ruibiao Fu,Zuju Ma,Xin‐Tao Wu
标识
DOI:10.1016/j.jallcom.2023.169288
摘要
Nonlinear optical (NLO) crystal is the key component in all-solid-state lasers. Herein, a new tungsten oxyfluoride with O/F orientationally order, K2(H2O)WO3F2, has been successfully obtained. It is interesting that the distorted [WO4F2] octahedra are induced by the trigonal [K2(H2O)]2+ motifs into an oriented arrangement. Remarkably, K2(H2O)WO3F2 exhibits the strongest phase-matching second-harmonic generation (SHG) response of 6 × KH2PO4 and the highest laser damage threshold of 274.45 MW/cm2 among reported transition-metal oxyfluorides. Theoretical calculations eluciate that its large SHG response mainly derives from the uniform alignment of the distorted [WO4F2] octahedra. This result is beneficial to the modulation of anion order and the exploration of high-performance NLO materials.
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