Surface-plasmon-enhanced photoelectron emission from nanostructure-covered periodic grooves on metals

被引：36
|
作者：
Hwang, Taek Yong [1 ]
Vorobyev, A. Y. [1 ]
Guo, Chunlei [1 ]
机构：
[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
来源：
PHYSICAL REVIEW B | 2009年 / 79卷 / 08期
基金：
美国国家科学基金会;
关键词：
nanostructured materials; periodic structures; photoelectron spectra; platinum; refractive index; surface plasmon resonance; PHOTOEMISSION; TEMPERATURES; TUNGSTEN;
D O I：
10.1103/PhysRevB.79.085425
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, we find that the resonant angle of surface plasmons (SPs) excited on a unique type of nanostructure-covered laser-induced periodic surface structure (NC-LIPSS) on platinum can be significantly different from the calculated value based on regular periodic grooves. We believe that this SP resonant angle shift is caused by an increase in the real part of the effective refractive index at the air-metal interface. We also find that the excitation of SPs can significantly enhance photoelectron emission on NC-LIPSSs.
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页数：4
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