Near-field optical observations of surface plasmon wave interference at subwavelength hole arrays perforated in Au film

被引：0
|
作者：
李江艳 [1 ]
甘霖 [2 ]
李志远 [2 ]
机构：
[1] International Center for Quantum Materials, Peking University
[2] Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences
来源：
Chinese Physics B | 2013年 / 22卷 / 11期
关键词：
surface plasmon waves; near-field pattern; oscillation;
D O I：
暂无
中图分类号：
O484 [薄膜物理学];
学科分类号：
080501 ; 1406 ;
摘要：
We image optical near-field patterns at subwavelength circular hole arrays in Au film by using scanning near-field optical microscopy in near-infrared wavelengths.Periodical oscillation features are found in the near-field images at the air/Au interface and exhibit two typical kinds of standing wave oscillation forms at the wavelengths corresponding to the transmission minimum and maximum in the transmission spectrum,and the latter one originates from the excitation and interference of a surface plasmon wave at the metallic hole arrays.Our work indicates that monitoring optical near-field patterns can help to reveal many interesting properties of surface plasmon waves at metallic nanostructures and understand their underlying physical mechanisms.
引用
收藏
页码：506 / 511
页数：6
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