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Proceedings Paper

Nonlinear theory of coherent fast wave radiation from spatiotemporally modulated gyrating electron beams
Author(s): A. K. Ganguly
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Paper Abstract

A multi-mode nonlinear analysis and particle simulation code is developed to analyze the generation of radiation at a harmonic of the rotation frequency for a spatiotemporally modulated gyrating electron beam in a cylindrical waveguide. For a device employing 150 kV, 6.7 A cold beam and a 18.8 GHz pump, nonlinear simulations show a 5th harmonic conversion efficiency of 55% at 94 GHz in a linearly tapered magnetic field. A nonlinear magnetic field taper which preserves exact phase matching gives an efficiency of 70%. The efficiency is not sensitive to axial velocity spread.

Paper Details

Date Published: 14 December 1992
PDF: 2 pages
Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 19294F (14 December 1992); doi: 10.1117/12.2298276
Show Author Affiliations
A. K. Ganguly, U.S. Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 1929:
17th International Conference on Infrared and Millimeter Waves
Richard J. Temkin, Editor(s)

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