Mechanism of linear and nonlinear optical effects of chalcopyrite AgGaX2 (X=S, Se, and Te) crystals

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题名:	Mechanism of linear and nonlinear optical effects of chalcopyrite AgGaX2 (X=S, Se, and Te) crystals
作者:	Bai, Lei;Lin, Zhes-huai;Wang, Zhiz-hong;Chen, Chuang-tian;Lee, Ming-hsien
贡献者:	淡江大學物理學系
日期:	2004-05-08
上传时间:	2009-12-31 10:26:09 (UTC+8)
出版者:	American Institute of Physics (AIP)
摘要:	The electronic band structures for AgGaX(2) (X=S, Se, Te) chalcopyrites have been calculated using a pseudopotential total energy method. First-principles calculations of the linear and nonlinear optical properties are presented for these crystals, with the electronic band structures obtained from pseudopotential method as input. The theoretical refractive indices and nonlinear optical coefficients are in good agreement with available experimental values. The origin of the nonlinear optical effects is explained through real-space atom-cutting analysis. The contribution of the GaX(2) group (X=S, Se, Te) for second harmonic generation (SHG) effect is dominant while that of the cation Ag is negligible. In addition, the percentage contribution to the SHG coefficients from the different bonds increase with increase of the bond order.
關聯:	Journal of chemical physics 120(18), pp.8772-8778
DOI:	10.1063/1.1687338
显示于类别:	[物理學系暨研究所] 期刊論文

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