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Title: Experimental study of multichromatic terahertz wave propagation through planar micro-channels

Previous theoretical and numerical studies [Y. M. Shin and L. R. Barnett, Appl. Phys. Lett. 92, 091501 (2008) and Y. M. Shin et al., Appl. Phys. Lett. 93, 221504 (2008)] have reported that a planar micro-channel with an asymmetric corrugation array supports strongly confined propagation of broadband THz plasmonic waves. The highly broad spectral response is experimentally demonstrated in the near-THz regime of 0.19-0.265 THz. Signal reflection and transmission tests on the three designed micro-channels including directional couplers resulted in a full-width-half-maximum bandwidth of ~ 50-60GHz with an insertion loss of approximately -5 dB, which is in good agreement with simulation data. As a result, these micro-structures can be utilized for free electron beam and electronic/optic integrated devices
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Univ. of California, Davis, CA (United States)
  2. (United States)
  3. (FNAL), Batavia, IL (United States)
Publication Date:
OSTI Identifier:
1235047
Report Number(s):
FERMILAB-PUB--12-909-APC
Journal ID: ISSN 0003-6951; APPLAB
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 100; Journal Issue: 15; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS diffraction gratings; terahertz radiation; plasmons; nanofabrication; ultraviolet light