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Browse Journals & Magazines > Applied Physics Letters ...> Volume:97 Issue:3 Help

Whispering-gallery-mode terahertz pulse propagation on a curved metallic plate

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2 Author(s)
Mendis, R. ; Department of Electrical and Computer Engineering, MS-366, 6100 Main Street, Rice University, Houston, Texas 77005, USA ; Mittleman, D.M.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3466909 

We demonstrate terahertz (THz) pulse propagation on a cylindrical aluminum plate, with low loss and negligible dispersion via transverse-electric type whispering gallery (WG) modes. We observe an apparent superluminal effect where the group velocity is greater than c, and explain this phenomenon by means of a plane-wave description of the WG modes. The propagation loss is dominated by the diffraction loss due to unbounded lateral spreading, with a negligible ohmic-loss contribution. Both experimental and theoretical results indicate a total loss as low as 2.6 dB/m at a frequency of 0.47 THz.

Published in:
Applied Physics Letters  (Volume:97 ,  Issue: 3 )

Date of Publication: Jul 2010

Page(s):
031106 - 031106-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.3466909
Product Type:
Journals & Magazines
Date of Current Version :
23 July 2010
Issue Date :
Jul 2010

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