Near-field observation of plasmon excitation and propagation on ordered elliptical hole arrays

被引：0
|
作者：
Chu, J.-Y. [1 ]
Wang, T.-J.
Yeh, J.-T.
Lin, M.-W.
Chang, Y.-C.
Wang, J.-K.
机构：
[1] Ind Technol Res Inst, Mat & Chem Res Labs, Hsinchu 31015, Taiwan
[2] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10764, Taiwan
[3] Acad Sinica, Inst Atom & Mol Sci, Taipei, Taiwan
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2007年 / 89卷 / 02期
关键词：
D O I：
10.1007/s00339-007-4109-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report a near-field study of the excitation and propagation of surface plasmon on ordered Ag elliptical hole arrays with a scattering-type scanning near-field optical microscope. Strong dipole-like local plasmon is identified at each individual hole from near-field optical intensity and phase images. The excitation of the local plasmon at the elliptical hole is found to follow polarization excitation constraint. The coherent superposition of these local plasmon waves to form an extended surface plasmon wave propagating to an adjacent hole array is observed directly. The near-field results are consistent with the results obtained from far-field extraordinary transmission measurements.
引用
收藏
页码：387 / 390
页数：4
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