Journal
OPTICS EXPRESS
Volume 15, Issue 17, Pages 10890-10902Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.15.010890
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We study the confinement of low group velocity band-edge modes in a photonic crystal slab. We use a rigorous, three dimensional, finite-difference time-domain method to compute the electromagnetic properties of the modes of the photonic structures. We show that by combining a defect mode approach with the high-density of states associated with band-edge modes, one can design compact, fabrication-tolerant, high-Q photonic microcavities. The electromagnetic confinement properties of these cavities can foster enhanced radiation dynamics and should be well suited for ultralow-threshold microlasers and cavity quantum electrodynamics. (c) 2007 Optical Society of America
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