Propagation effects in apertureless near-field optical antennas

被引：55

作者：

Wang, KL ^{[1
]}

Barkan, A ^{[1
]}

Mittleman, DM ^{[1
]}

机构：

[1] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77251 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 02期

关键词：

D O I：

10.1063/1.1640473

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a direct observation of the electromagnetic wave propagation on optical antennas. A free-space broadband terahertz pulse is coupled into a propagating mode along the shaft of an optical antenna acting as an apertureless near-field probe. We determine the spatial extent of this guided mode and its velocity. In addition, we consider the possibility of multiply reflected modes propagating along the near-field probe, an effect which will be significant in near-field spectroscopic measurements. (C) 2004 American Institute of Physics.

引用

页码：305 / 307

页数：3

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