Two-photon absorption of Sin (n=3-10) clusters compared with Si bulk

被引：3
作者：
Lan, You-Zhao [1 ]
机构：
[1] Zhejiang Normal Univ, Inst Phys Chem, Dept Chem, Coll Chem & Life Sci, Jinhua 321004, Zhejiang, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2012年 / 545卷
关键词：
NONLINEAR-OPTICAL PROPERTIES; DENSITY-FUNCTIONAL THEORY; SMALL SILICON CLUSTERS; RESPONSE FUNCTIONS; AB-INITIO; SEMICONDUCTOR CLUSTERS; CROSS-SECTIONS; POROUS SILICON; POLARIZABILITIES; NANOCLUSTERS;
D O I：
10.1016/j.cplett.2012.07.034
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The two-photon absorption (TPA) properties of the Si-n (n = 3-10) clusters were investigated by using the density functional response approach. The TPA coefficients of the Si clusters are systematically smaller than those of Si bulk for 800-2200 nm. The TPA coefficients of the Si clusters as well as Si bulk increase with a decrease of the input light wavelength. The analysis of the TPA enhancement shows that the channel of double resonance makes a significant contribution to the large TPA coefficients of the Si clusters in the visible range. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：95 / 99
页数：5
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