1 June 2007 Spectrally selective infrared absorption in defect-mode photonic-crystal-slab cavity
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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.
Weidong Zhou, Li Chen, Zexuan Qiang, 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 . Submission:

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