Giant enhancement of second-harmonic generation in multiple diffraction orders from sub-wavelength resonant waveguide grating

被引:18
|
作者
Saari, A. [1 ]
Genty, G. [1 ]
Siltanen, M. [1 ,2 ]
Karvinen, P. [3 ]
Vahimaa, P. [3 ]
Kuittinen, M. [3 ]
Kauranen, M. [1 ]
机构
[1] Tampere Univ Technol, Dept Phys, Opt Lab, FIN-33101 Tampere, Finland
[2] Univ Helsinki, Dept Chem, Phys Chem Lab, FIN-00014 Helsinki, Finland
[3] Univ Eastern Finland, Dept Math & Phys, FIN-80101 Joensuu, Finland
来源
OPTICS EXPRESS | 2010年 / 18卷 / 12期
基金
芬兰科学院;
关键词
FLUORESCENCE; EXCITATION;
D O I
10.1364/OE.18.012298
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We demonstrate a purely dielectric resonant waveguide structure that enhances the efficiency of second-harmonic generation by a factor of at least 5500 compared to a flat reference surface in the same geometry. We also show that the structure emits second-harmonic radiation in four different directions when the sample is illuminated with fundamental radiation incident at the resonant angle of the sample. (C) 2010 Optical Society of America
引用
收藏
页码:12298 / 12303
页数:6
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