Third- and second-harmonic generation microscopy of individual metal nanocones using cylindrical vector beams

被引：37

作者：

Bautista, Godofredo ^{[1
]}

Huttunen, Mikko J. ^{[1
]}

Kontio, Juha M. ^{[2
]}

Simonen, Janne ^{[2
]}

Kauranen, Martti ^{[1
]}

机构：

[1] Tampere Univ Technol, Dept Phys, FIN-33101 Tampere, Finland

[2] Tampere Univ Technol, Optoelect Res Ctr, FIN-33101 Tampere, Finland

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 19期

基金：

芬兰科学院;

关键词：

3RD-HARMONIC GENERATION; ORIENTATION; MODES; LIGHT;

D O I：

10.1364/OE.21.021918

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate third-(THG) and second-harmonic generation (SHG) microscopy of individual silver nanocones using tightly focused cylindrical vector beams (CVBs). Although THG is expected to be a weaker process than SHG, the yield for THG with radial polarization was higher than for SHG. We also found an excellent correlation between the imaging properties of THG and SHG, suggesting that both are governed by the same overall features of the individual nanocone. We also found that the transverse spatial resolution of THG with CVBs, particularly RP, exceeds that of SHG. Our work establishes the potential of THG microscopy with CVBs for structure-sensitive imaging of three-dimensional (3D) metal nano-objects. (C) 2013 Optical Society of America

引用

页码：21918 / 21923

页数：6

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