硼
二次谐波产生
材料科学
非线性光学
循环(图论)
紫外线
非线性光学
Crystal(编程语言)
高次谐波产生
光电子学
光学材料
非线性系统
光学
物理
激光器
计算机科学
数学
组合数学
量子力学
核物理学
程序设计语言
作者
Wei Xie,Ru‐Ling Tang,Shengnan Yan,Nan Ma,Chun‐Li Hu,Jiang‐Gao Mao
出处
期刊:Small
[Wiley]
日期:2023-11-08
标识
DOI:10.1002/smll.202307072
摘要
Abstract Discovering new deep ultraviolet (DUV) nonlinear optical (NLO) materials is the current research hotspot. However, how to perfectly integrate several stringent performances into a crystal is a great challenge because of the natural incompatibility among them, particularly wide band gap and large NLO coefficient. To tackle the challenge, a boron‐rich closed‐loop strategy is supposed, based on which a new barium borate, Ba 4 B 14 O 25 , is designed and synthesized successfully via the high‐temperature solid‐state melting method. It features a highly polymeric 3D geometry with the closed‐loop anionic framework [B 14 O 25 ] 8− constructed by the fundamental building blocks [B 14 O 33 ] 24− . The high‐density π‐conjugated [BO 3 ] 3− groups and the fully closed‐loop B–O–B connections make Ba 4 B 14 O 25 possess excellent NLO properties, including short UV cutoff edge (<200 nm), large second harmonic generation response (3.0 × KDP) and phase‐matching capability, being a promising DUV‐transparent NLO candidate material. The work provides a creative design strategy for the exploration of DUV NLO crystals.
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