Efficient second harmonic generation using nonlinear substrates patterned by nano-antenna arrays

被引：34

作者：

Bar-Lev, Doron ^{[1
]}

Scheuer, Jacob ^{[1
]}

机构：

[1] Tel Aviv Univ, Sch Elect Engn, IL-69978 Tel Aviv, Israel

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 24期

关键词：

SPLIT-RING RESONATORS; HARMONIC-GENERATION; ENHANCEMENT; GAAS; NANOANTENNAS; BOWTIE; DIPOLE;

D O I：

10.1364/OE.21.029165

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study theoretically various design considerations for efficient generation of second harmonic using a nonlinear substrate patterned with nano-antennas. The analysis is focused on a gap Bowtie nano-antenna array recessed in LiNbO3 which is shown to be preferable over on surface structures due to field enhancement, field profile and linear and non-linear polarization considerations. In addition, we develop the nano-antenna counterpart of the Boyd-Klienmann model in order to analyze the impact of a Gaussian shaped fundamental beam on the generated second harmonic. Finally, we show that the dielectric properties of the substrate lead to preferable directions for the incident fundamental harmonic and the emission of the second harmonic. Our analyses lead to several design rules which can enhance second and high harmonic generation from nano-antennas arrays by several orders of magnitude. (C)2013 Optical Society of America

引用

页码：29165 / 29178

页数：14

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