Confinement of band-edge modes in a photonic crystal slab

Frédéric Bordas*, M. J. Steel, Christian Seassal, Adel Rahmani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


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 bandedge 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.

Original languageEnglish
Pages (from-to)10890-10902
Number of pages13
JournalOptics Express
Issue number17
Publication statusPublished - 20 Aug 2007

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