Directional emission, increased free spectral range and mode Q-factors in 2-D wavelength-scale optical microcavity structures

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dc.creatorBoriskina, Svetlana V.
dc.creatorBenson, Trevor M.
dc.creatorSewell, Phillip
dc.creatorNosich, Alexander I.
dc.date2006-07-22
dc.date.accessioned2026-07-07T07:37:04Z
dc.date.available2026-07-07T07:37:04Z
dc.descriptionAchieving single-mode operation and highly directional (preferably unidirectional) in-plane light output from whispering-gallery (WG) mode semiconductor microdisk resonators without seriously degrading the mode Q-factor challenges designers of low-threshold microlasers. To address this problem, basic design rules to tune the spectral and emission characteristics of micro-scale optical cavity structures with nanoscale features by tailoring their geometry are formulated and discussed in this paper. The validity and usefulness of these rules is demonstrated by reviewing a number of previously studied cavity shapes with global and local deformations. The rules provide leads to novel improved WG-mode cavity designs, two of which are presented: a cross-shaped photonic molecule with introduced asymmetry and a photonic-crystal-assisted microdisk resonator. Both these designs yield degenerate mode splitting, as well as Q-factor enhancement and directional light output of one of the split modes.
dc.description8 pages with 13 figures (to appear in the Special Issue of JSTQE on Nanophotonics, 2006)
dc.identifierhttps://arxiv.org/abs/physics/0607200
dc.identifierhttp://arxiv.org/abs/physics/0607200
dc.identifierIEEE J. Select. Topics Quantum Electron. 12(6, part 1) 1175-1182 (2006)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/120651
dc.subjectOptics
dc.titleDirectional emission, increased free spectral range and mode Q-factors in 2-D wavelength-scale optical microcavity structures
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