TITLE

Propagation effects in apertureless near-field optical antennas

AUTHOR(S)
Kanglin Wang, Jelena; Barkan, Adrian; Mittleman, Daniel M.
PUB. DATE
January 2004
SOURCE
Applied Physics Letters;1/12/2004, Vol. 84 Issue 2, p305
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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. © 2004 American Institute of Physics.
ACCESSION #
11861849

 

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