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Title: Double negative-metamaterial based Terahertz radiation excited by a sheet beam bunch

We describe a new method to generate enhanced terahertz (THz) surface wave (SW) via its coupling with reversed Cherenkov radiation (RCR), excited by a sheet beam bunch which travels in a vacuum above an isotropic double negative metamaterial (DNM). The physical mechanism for the enhancement is that the DNM can support a RCR which can resonantly interact with a sheet electron beam bunch, resulting in an enhanced SW due to its coupling with the enhanced RCR. Numerical results show strong enhancement effect for the SW and RCR in the THz band. This enhanced THz radiation has potential applications to high-power THz radiation sources and Cherenkov detectors which require large signals.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [4]
  1. Institute of High Energy Electronics, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054 (China)
  2. (United States)
  3. Southwest China Institute of Electronic Technology, Chengdu 610036 (China)
  4. Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
Publication Date:
OSTI Identifier:
22220632
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 9; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BEAM BUNCHERS; CHERENKOV COUNTERS; CHERENKOV RADIATION; COUPLING; ELECTRON BEAMS; NUMERICAL ANALYSIS; PLASMA; RADIATION SOURCES; SHEETS; WAVE PROPAGATION