Phase matching for surface plasmon enhanced second harmonic generation in a gold grating slab

被引：11
作者：
Ngoc Luong [1 ]
Cheng, Cheng-Wen [2 ,3 ,4 ]
Shih, Min-Hsiung [2 ]
Kuang, Wan [1 ]
机构：
[1] Boise State Univ, Dept Elect & Comp Engn, Boise, ID 83725 USA
[2] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan
[3] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
[4] Acad Sinica, Taiwan Int Grad Program, Taipei 11529, Taiwan
来源：
APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 18期
基金：
美国国家科学基金会;
关键词：
REFRACTIVE-INDEX; METAMATERIALS;
D O I：
10.1063/1.4710546
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Surface plasmon enhanced second harmonic generation in gold grating slabs was investigated. The efficiency is analyzed with respect to the phase matching at the fundamental and the second harmonic frequencies. A classical electromagnetic model was developed under the weak nonlinearity approximation and solved by the finite element method. The measured zeroth order transmitted second harmonic intensity was found to be in quantitative agreement with numerical results. It is shown experimentally and numerically that proper phase matching at both frequencies improves the second harmonic efficiency. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4710546]
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页数：3
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