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Proceedings Paper

A quasi-optical mode converter for gyrotrons operating in high order modes
Author(s): M. Blank
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Paper Abstract

A quasi-optical mode converter has been designed to transform to the TE22,6 cylindrical waveguide mode at 110 GHz toa Gaussian beam in free space. The converter consists of an irregular cylindrical waveguide section followed by a step-cutlaunching aperture and several focussing reflectors. The irregular waveguide section, which is designed using coupled modetheory, is used to bunch the radiation into Gaussian bundles prior to the launch. The reflectors that follow are designed withGaussian optics. A rigorous diffraction theory has been developed to analyze the converter system. The converter will bebuilt and tested, and results will be compared to the diffraction theory.

Paper Details

Date Published: 30 August 1993
PDF: 2 pages
Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21044K (30 August 1993); doi: 10.1117/12.2298596
Show Author Affiliations
M. Blank, MIT Plasma Fusion Ctr. (United States)

Published in SPIE Proceedings Vol. 2104:
18th International Conference on Infrared and Millimeter Waves
James R. Birch; Terence J. Parker, Editor(s)

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