NDLI: Design and Cold Tests of Asymmetric Quasioptical Resonators

Content Provider	Springer Nature Link
Author	Fischer, Richard P. Fliflet, Arne W.
Copyright Year	2002
Abstract	This paper presents the design and test of asymmetric quasioptical resonators for gyrotron applications, where most of the diffraction output coupling comes from the smaller of two mirrors. A computer code based on scalar diffraction theory is used to calculate the resonator losses and the electric field near the mirrors. Resonators with mirror separations approaching confocal have reduced side lobes in the diffraction patterns, which should allow for better power transmission and focusing. Cold tests have been performed at 94 and 141 GHz to measure the quality factor of the asymmetric resonators as a function of mirror separation and mirror misalignment. Typical resonator parameters include 65 cm mirror separation, 1-3% output coupling and 85% of the losses from the small mirror. A half-symmetric resonator with one flat and one curved mirror has also been investigated. The calculated values of Q are in reasonably good agreement with the cold test measurements.
Starting Page	1297
Ending Page	1313
Page Count	17
File Format	PDF
ISSN	01959271
Journal	International Journal of Infrared and Millimeter Waves
Volume Number	23
Issue Number	9
e-ISSN	15729559
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2002-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Meteorology/Climatology Astronomy Electronic and Computer Engineering
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Instrumentation 3100/3101 Condensed Matter Physics Electrical and Electronic Engineering Radiation

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