Spectrally selective infrared absorption in defect-mode photonic-crystal-slab cavity

Weidong Zhou; Li Chen; Zexuan Qiang; Gail J. Brown

doi:10.1117/1.2759238

1 June 2007 Spectrally selective infrared absorption in defect-mode photonic-crystal-slab cavity

Weidong Zhou, Li Chen, Zexuan Qiang, Gail J. Brown

Author Affiliations +

Journal of Nanophotonics, Vol. 1, Issue 1, 013515 (June 2007). https://doi.org/10.1117/1.2759238

Abstract

Significantly enhanced absorption at the defect mode can be obtained at surface-normal direction in a dielectric single-defect photonic-crystal-slab, with an absorption enhancement factor greater than 4,000. Complete absorption suppression within the photonic bandgap region can also be observed in defect-free photonic crystal cavities. High spectral selectivity and tunability is feasible with defect mode engineering, making photonic crystal defect cavities a promising nanophotonic platform for the spectrally selective infrared sensing and hyper-spectral imaging, with the incorporation of quantum well or quantum dot infrared photodetector heterostructures.

Citation Download Citation

Weidong Zhou, Li Chen, Zexuan Qiang, and Gail J. Brown "Spectrally selective infrared absorption in defect-mode photonic-crystal-slab cavity," Journal of Nanophotonics 1(1), 013515 (1 June 2007). https://doi.org/10.1117/1.2759238

Published: 1 June 2007

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