化学
二次谐波产生
红外线的
堆积
非线性光学
非线性光学
激光器
高次谐波产生
光电子学
衍射
钻石
结晶学
非线性系统
光学
材料科学
量子力学
物理
有机化学
作者
Man‐Man Chen,Shenghua Zhou,Wenbo Wei,Xin‐Tao Wu,Hua Lin,Qi‐Long Zhu
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2021-06-17
卷期号:60 (13): 10038-10046
被引量:19
标识
DOI:10.1021/acs.inorgchem.1c01359
摘要
Despite the fact that nonlinear optical (NLO) crystals such as AgGaS2 and AgGaSe2 have been widely used in the infrared (IR) range due to their large second harmonic generation (SHG) coefficients and wide range of IR transparency windows, the small laser-induced damage threshold (LIDT) remains a great issue hindering their high-power applications. Herein, three noncentrosymmetric (NCS) chalcogenides AZn4Ga5Se12 (A = K, Rb, or Cs) are successfully obtained through an appropriate flux method after the extensive design and synthesis of the A/Zn/Ga/Q system. Single-crystal X-ray diffraction data demonstrate that they adopt trigonal space group R3 (No. 146) with three-dimensional diamond-like frameworks composed of [M9Se24] layers (M = Zn or Ga) stacking in the same direction and filled by charge-balancing A+ cations. Noticeably, they all exhibit strong powder SHG responses (2.8–3.7 × AgGaS2) and amazing LIDTs (19.2–23.4 × AgGaS2). In addition, theoretical calculations are performed to further determine the relationship between NCS structures and NLO properties. This work provides effective solutions for overcoming the trade-off between strong SHG and high LIDT in IR-NLO materials.
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