High-Q whispering gallery modes in a spherical shell dielectric resonator: Characterization at microwave frequencies |
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| Authors: | I Longo D Cros N Tosoratti |
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| Institution: | (1) Institute for Chemical-Physical Processes, CNR, Via G. Moruzzi 1, 56124 Pisa, Italy, IT;(2) IRCOM, U.F.R. des Sciences, Université de Limoges, 87060 Limoges Cedex, France, FR |
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| Abstract: | We present a numerical and experimental characterization of high-Q whispering gallery resonant modes excited in a fused quartz spherical shell operated in the 18-26.5 GHz band; easy coupling
and selection of modes is a most advantageous feature of the proposed structure with respect to ordinary bulk resonators.
The numerical results, based on a finite element algorithm, well match experimental data, which also show the capability of
our device to perform gaseous spectroscopy measurements.
Received 25 October 2002 Published online 4 February 2003 |
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| Keywords: | PACS 41 20 Jb Electromagnetic wave propagation radiowave propagation |
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