High-quality-factor and small-mode-volume hexapole modes in photonic-crystal-slab nanocavities

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Using finite-difference time-domain calculations, we investigate the hexapole mode of photonic-crystal-slab modified triangular single-defect cavity structures as a good candidate for a high-quality factor (Q) and small-mode volume (V) resonant mode. Structural parameters are optimized to obtain very large Q of even higher than 2x10(6) with small effective V of the order of cubic wavelength in material, the record value of theoretical Q/V. It is found, by the Fourier-space investigation of resonant modes, that such a high Q from the hexapole mode is achieved due both to the cancellation mechanism related to hexagonally symmetric whispering-gallery-mode distribution and to the mode delocalization mechanism. (C) 2003 American Institute of Physics.
Publisher
AMER INST PHYSICS
Issue Date
2003-11
Language
English
Article Type
Article
Keywords

CAVITY-QUANTUM ELECTRODYNAMICS; SINGLE-DEFECT; BAND-GAP; MICROCAVITIES; LASERS; DEVICE; DESIGN; DOT

Citation

APPLIED PHYSICS LETTERS, v.83, pp.4294 - 4296

ISSN
0003-6951
URI
http://hdl.handle.net/10203/20367
Appears in Collection
PH-Journal Papers(저널논문)
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