碲酸盐
带隙
材料科学
非线性光学
二次谐波产生
调制(音乐)
红外线的
氧化物
光电子学
结晶学
光学
离子
化学
非线性系统
物理
冶金
激光器
有机化学
量子力学
声学
作者
Dan Wang,Yunxi Zhang,Qian Liu,Bingbing Zhang,Daqing Yang,Ying Wang
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:51 (23): 8955-8959
被引量:6
摘要
Tellurate crystals are attractive for developing new nonlinear optical (NLO) materials in the mid-infrared region due to their wide transmission window. In this work, we report a quaternary tellurate oxide crystal, Li2GeTeO6, which exhibits a short cutoff edge (240 nm) with a powder second harmonic generation (SHG) response of 1.3 × KH2PO4 (KDP). The reported material reveals the largest band gap in the Li2MTeO6 (M = tetravalent cation) family. The first-principles calculations were used to illustrate the origin of the NLO effect. These results highlight the band gap engineering based on the cation substitution strategy for designing new NLO materials with balanced optical properties.
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