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Proceedings Paper

Spectral selective absorption enhancement in photonic crystal defect cavities
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Paper Abstract

In this paper, we present the simulation results on the absorption modification in a two-dimensional photonic crystal slab (2D PCS) structure, based on three-dimensional finite-difference time-domain technique (3D FDTD). Significantly enhanced absorption at defect level was obtained at surface normal direction in a single defect photonic crystal cavity, for both in-plane and vertical sources. An absorption enhancement factor in the range of 100-6,000 was obtained under different operation conditions, based on the normalized absorption power spectral density with respect to the reference slab without photonic crystals. Complete absorption suppression within the photonic bandgap region was also observed in defect-free cavities. High spectral selectivity and tunability was feasible with defect mode engineering.

Paper Details

Date Published: 6 February 2007
PDF: 8 pages
Proc. SPIE 6480, Photonic Crystal Materials and Devices VI, 64801C (6 February 2007); doi: 10.1117/12.699410
Show Author Affiliations
Li Chen, Univ. of Texas at Arlington (United States)
Zexuan Qiang, Univ. of Texas at Arlington (United States)
Weidong Zhou, Univ. of Texas at Arlington (United States)
Gail J. Brown, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 6480:
Photonic Crystal Materials and Devices VI
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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