Extraordinary high-Q resonances in the scattering by a dielectric slab containing a grating of circular cylinders
An infinite dielectric wire grating in free space is known to possess very high-Q resonances at the frequencies close to the Rayleigh anomalies. Still a practical implementation of such a resonator may require its embedding in a dielectric slab. In this paper, it is shown that this can bring a...
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| Date: | 2014 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2014
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| Series: | Semiconductor Physics Quantum Electronics & Optoelectronics |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/118356 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Extraordinary high-Q resonances in the scattering by a dielectric slab containing a grating of circular cylinders / V.O. Byelobrov, T.M. Benson // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2014. — Т. 17, № 1. — С. 100-105. — Бібліогр.: 11 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | An infinite dielectric wire grating in free space is known to possess very high-Q
resonances at the frequencies close to the Rayleigh anomalies. Still a practical
implementation of such a resonator may require its embedding in a dielectric slab. In this
paper, it is shown that this can bring additional improvement of the Q-factors. A
dielectric slab with a symmetrically embedded dielectric-wire grating is investigated
under the normal incidence of plane waves. Accurate numerical solutions are derived for
the E- and H-polarization cases. Associated eigenvalue problems are solved for the realvalued
lasing frequencies and the threshold values of material gain. |
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