Research Papers

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

[+] Author Affiliations
Weidong Zhou, Li Chen, Zexuan Qiang

University of Texas at Arlington

Gail J. Brown

Air Force Research Laboratory

J. Nanophoton. 1(1), 013515 (June 26, 2007). doi:10.1117/1.2759238
History: Received April 17, 2007; Revised June 21, 2007; Accepted June 22, 2007; June 26, 2007; Online June 26, 2007
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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.

© 2007 Society of Photo-Optical Instrumentation Engineers

Topics

Absorption ; Crystals

Citation

Weidong Zhou ; Li Chen ; Zexuan Qiang and Gail J. Brown
"Spectrally selective infrared absorption in defect-mode photonic-crystal-slab cavity", J. Nanophoton. 1(1), 013515 (June 26, 2007). ; http://dx.doi.org/10.1117/1.2759238


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