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Title: Cherenkov radiation oscillator without reflectors

This Letter presents a Cherenkov radiation oscillator with an electron beam travelling over a finitely thick plate made of negative-index materials. In such a scheme, the external reflectors required in the traditional Cherenkov oscillators are not necessary, since the electromagnetic energy flows backward in the negative-index materials, leading to inherent feedback. We theoretically analyzed the interaction between the electron beam and the electromagnetic wave, and worked out the growth rate and start current through numerical calculations. With the help of particle-in-cell simulation, the theoretical predictions are well demonstrated.
Authors:
 [1] ; ; ;  [2] ;  [3] ;  [4]
  1. Institute for Laser Technology, Suita, Osaka 565-0871 (Japan)
  2. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054 (China)
  3. Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871 (Japan)
  4. Laboratory of Advanced Science and Technology for Industry, University of Hyogo, Ako, Hyogo 678-1205 (Japan)
Publication Date:
OSTI Identifier:
22273435
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 19; Other Information: (c) 2014 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; CHERENKOV RADIATION; ELECTRON BEAMS; OPTICAL PROPERTIES; OSCILLATORS