Observation of a new type of THz resonance of surface plasmons propagating on metal-film hole arrays

被引：67

作者：

Qu, DX ^{[1
]}

Grischkowsky, D ^{[1
]}

机构：

[1] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 19期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.196804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Highly conducting metal-film subwavelength hole arrays, lithographically fabricated on high-resistivity silicon wafers in optical contact with thick silicon plates, have been characterized by terahertz time-domain spectroscopy with subpicosecond resolution and over a frequency range from 0.5 to 3 THz with 5 GHz resolution. A well-defined ringing structure extending to more than 250 psec is observed on the trailing edge of the transmitted THz pulse. In the frequency domain this ringing structure corresponds to a new type of extremely sharp resonant line structure between the fundamental surface plasmon modes of the hole array. A simple theoretical model is presented and shows good agreement with the experimental data.

引用

页码：196804 / 1

页数：4

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