LiM
<sup>II</sup>
(IO
<sub>3</sub>
)
<sub>3</sub>
(M
<sup>II</sup>
=Zn and Cd): Two Promising Nonlinear Optical Crystals Derived from a Tunable Structure Model of α‐LiIO
<sub>3</sub>
作者:Ying‐Jie Jia、Yi‐Gang Chen、Yao Guo、Xiao‐Fang Guan、Chengbo Li、Bingxuan Li、Min‐Min Liu、Xian‐Ming Zhang
DOI:10.1002/anie.201908935
日期:2019.11.25
commercialized α-LiIO3 with the perfect parallel alignment of IO3 groups. Compared with parent α-LiIO3 and related AI 2 MIV (IO3 )6 , the title compounds exhibit more stable covalent 3D structure, and overcome the racemic twinning problem of AI 2 MIV (IO3 )6 . More importantly, both compounds inherit NLO-favorable structure merits of α-LiIO3 and show larger SHG response (≈14× and ≈12×KDP), shorter absorption
出色的非线性光学材料可同时满足大SHG响应,相位匹配能力,宽透明窗,可观的能带隙,良好的热稳定性和结构稳定性的要求。本文中,通过商品化α-LiIO3的异价取代策略,合理地设计了两个新的有前途的非线性光学(NLO)晶体LiMII(IO3)3(MII = Zn和Cd),并实现了IO3基团的完美平行排列。与母体α-LiIO3和相关的AI 2 MIV(IO3)6相比,标题化合物具有更稳定的共价3D结构,并克服了AI 2 MIV(IO3)6的外消旋孪生问题。更重要的是,这两种化合物都继承了α-LiIO3的NLO有利结构优点,并显示出更大的SHG响应(≈14×和≈12×KDP),更短的吸收边缘(294和297 nm)和更宽的能带隙(4。