Open AccessFine-tuned high-Q photonic-crystal nanocavity
Author(s) -
Yoshihiro Akahane,
Tanemasa Asano,
Biao Song,
Susumu Noda
Publication year - 2005
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.001202
Subject(s) - photonic crystal , optics , q factor , slab , resonator , materials science , wavelength , mode volume , optoelectronics , physics , fiber optic sensor , geophysics , optical fiber , graded index fiber
A photonic nanocavity with a high Q factor of 100,000 and a modal volume V of 0.71 cubic wavelengths, is demonstrated. According to the cavity design rule that we discovered recently, we further improve a point-defect cavity in a two-dimensional (2D) photonic crystal (PC) slab, where the arrangement of six air holes near the cavity edges is fine-tuned. We demonstrate that the measured Q factor for the designed cavity increases by a factor of 20 relative to that for a cavity without displaced air holes, while the calculated modal volume remains almost constant.