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On a quality factor of whispering gallery mode dielectric resonators in a form of cone

✍ Scribed by Nickolay T. Cherpak; Sergey A. Bunyaev; Alexander A. Barannik

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 156 KB
Volume: 49
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.22625

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✦ Synopsis

Abstract

The whispering gallery mode (WGM) resonators in a form of cone demonstrate that a quality factor Q in microwave range decreases monotonously with increase of angle α between a cone axis and generatrix. Both a form of the resonator made of Teflon and coupling between the resonator and input/output dielectric waveguides are analogous to them in the optic microcavity, where it was supposed that isolating mode from the disk perimeter resulted in Q increase. However the effect of increase of Q with α is not observed in microwave range. The cone resonators excited on WGM promise to become useful for microwave and millimeter‐wave characterization of high‐T~c~ superconducting films. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1987–1989, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22625

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