Detecting the trapping of small metal nanoparticles in the gap of nanoantennas with optical second harmonic generation

被引：8
作者：
Butet, Jeremy [1 ]
Lovera, Andrea [1 ]
Martin, Olivier J. F. [1 ]
机构：
[1] Swiss Fed Inst Technol Lausanne EPFL, Nanophoton & Metrol Lab NAM, CH-1015 Lausanne, Switzerland
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 23期
基金：
瑞士国家科学基金会;
关键词：
SCATTERING; NANOSTRUCTURES; SPECTROSCOPY; MODEL;
D O I：
10.1364/OE.21.028710
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The second harmonic generation from gold nanoparticles trapped into realistic and idealized gold nanoantennas is numerically investigated using a surface integral equations technique. It is observed that the presence of a nanoparticle in the nanoantenna gap dramatically modifies the second harmonic intensity scattered into the far-field. These results clearly demonstrate that second harmonic generation is a promising alternative to the conventional linear optical methods for the detection of trapping events at the nanoscale. (C) 2013 Optical Society of America
引用
收藏
页码：28710 / 28718
页数：9
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