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Title: Analysis of saturation phenomena in Cerenkov free-electron lasers with a planar waveguide

Abstract

In this paper, the operation of the stimulated emission in Cerenkov free-electron laser (CFEL) is studied on the basis of the modulations of electron velocity and density by the electromagnetic (EM) field. The influence of the electron relaxation, due to mutual electrons collisions, on the electron dynamics is taken into account. We investigate the growth characteristics of Cerenkov laser operating in the small-signal and saturation regimes. In the saturation regime, the effect of velocity reduction of the electron beam on the gain dynamics is demonstrated. We also show that our results match with those of other well-known treatments in the small-signal gain limit.

Authors:
;  [1]
  1. Division of Electrical Engineering and Computer Science, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192 (Japan)
Publication Date:
OSTI Identifier:
22043520
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 18; Journal Issue: 9; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CHERENKOV RADIATION; DENSITY; ELECTRON BEAMS; ELECTRON COLLISIONS; ELECTRONS; FREE ELECTRON LASERS; GAIN; LIGHT TRANSMISSION; MODULATION; PLASMA; PLASMA DENSITY; RELAXATION; SATURATION; STIMULATED EMISSION; WAVEGUIDES

Citation Formats

Fares, Hesham, and Yamada, Minoru. Analysis of saturation phenomena in Cerenkov free-electron lasers with a planar waveguide. United States: N. p., 2011. Web. doi:10.1063/1.3630942.
Fares, Hesham, & Yamada, Minoru. Analysis of saturation phenomena in Cerenkov free-electron lasers with a planar waveguide. United States. doi:10.1063/1.3630942.
Fares, Hesham, and Yamada, Minoru. Thu . "Analysis of saturation phenomena in Cerenkov free-electron lasers with a planar waveguide". United States. doi:10.1063/1.3630942.
@article{osti_22043520,
title = {Analysis of saturation phenomena in Cerenkov free-electron lasers with a planar waveguide},
author = {Fares, Hesham and Yamada, Minoru},
abstractNote = {In this paper, the operation of the stimulated emission in Cerenkov free-electron laser (CFEL) is studied on the basis of the modulations of electron velocity and density by the electromagnetic (EM) field. The influence of the electron relaxation, due to mutual electrons collisions, on the electron dynamics is taken into account. We investigate the growth characteristics of Cerenkov laser operating in the small-signal and saturation regimes. In the saturation regime, the effect of velocity reduction of the electron beam on the gain dynamics is demonstrated. We also show that our results match with those of other well-known treatments in the small-signal gain limit.},
doi = {10.1063/1.3630942},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 9,
volume = 18,
place = {United States},
year = {2011},
month = {9}
}