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首页> 外文期刊>Chemistry: A European journal >AgGa_2PS_6: A New Mid-Infrared Nonlinear Optical Material with a High Laser Damage Threshold and a Large Second Harmonic Generation Response
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AgGa_2PS_6: A New Mid-Infrared Nonlinear Optical Material with a High Laser Damage Threshold and a Large Second Harmonic Generation Response

机译：AGGA_2PS_6：一种新的中红外非线性光学材料，具有高激光损伤阈值和大的第二次谐波产生响应

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摘要

To develop new mid-infrared (MIR) nonlinear optical (NLO) materials, which can overcome the low laser damage threshold (LDT) of the commercial MIR-NLO crystals (AgGaS_2, AgGaSe_2 and ZnGeP_2) and simultaneously keep the large NLO susceptibility, is necessary for highpower MIR laser frequency conversion technology. To improve the LDT, a new strategy of increasing lattice stability was adopted. Here, the strongly covalent structural unit of the PS_4 tetrahedron was introduced into AgGaS_2 (AGS), and that led to the isolation of the first compound in AgIGaIII-PV-S system, namely, AgGa_2PS_6 (Cc). It retains a large SHG efficiency (1.0VAGS) with phase-matchable ability, and also exhibits an improved LDT (5.1VAGS), indicating AgGa_2PS_6 is a new promising MIR-NLO crystal. Moreover, a novel 3D framework of [Ga_2PS_6]~-, with triangular-shaped channels, as well as interesting single triangular geometry of AgS_3-both of which are very rare in reported sulfides-was discovered in AgGa_2PS_6. Furthermore, theoretical calculations, and lattice energy and thermal expansions analyses suggest that the PS_4 group makes a large contribution to the large SHG efficiency and high LDT.
机译：开发新的中红外（MIR）非线性光学（NLO）材料，可以克服商业MIR-NLO晶体的低激光损伤阈值（LDT）（Aggas_2，Aggase_2和ZnGEP_2）并同时保持大的NLO易感性，是高功率MiR激光频率转换技术所必需的。为了提高LDT，采用了增加格子稳定性的新策略。这里，将PS_4四面体的强烈结构单元引入AgGAS_2（AGS）中，并导致AggaIII-PV-S系统中的第一化合物的分离，即AgGa_2PS_6（CC）。它保留了具有相匹配能力的大的SHG效率（1.0Vags），并且还具有改进的LDT（5.1Vags），表示Agga_2PS_6是一种新的承诺miR-NLO晶体。此外，具有三角形通道的[Ga_2PS_6]〜 - 具有三角形通道的新型3D框架，以及AGS_3-的有趣的单一三角形几何形状在报告的硫化物中是非常罕见的 - 在AgGa_2PS_6中发现。此外，理论计算和晶格能量和热膨胀分析表明PS_4组对大小的SHG效率和高LDT提供了大的贡献。

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  • 来源
    《Chemistry: A European journal》 |2017年第46期|共5页
  • 作者

    Jiang-He Feng; Chun-Li Hu; Xiang Xu; Bing-Xuan Li; Ming-Jian Zhang; Jiang-Gao Mao;

  • 作者单位

    State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 (P. R. China);

    State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 (P. R. China);

    State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 (P. R. China);

    Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 (P. R. China);

    State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 (P. R. China);

    State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 (P. R. China);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    laser chemistry; metal thiophosphates; MIR-NLO material; nonlinear optics; planar triangles; second harmonic generation; theoretical calculations;

    机译：激光化学;金属硫代磷酸盐;MIR-NLO材料;非线性光学;平面三角形;二次谐波产生;理论计算;

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