Spectral selective absorption enhancement in photonic crystal defect cavities

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

doi:10.1117/12.699410

6 February 2007 Spectral selective absorption enhancement in photonic crystal defect cavities

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

Proceedings Volume 6480, Photonic Crystal Materials and Devices VI; 64801C (2007) https://doi.org/10.1117/12.699410
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

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.

Citation Download Citation

Li Chen, Zexuan Qiang, Weidong Zhou, and Gail J. Brown "Spectral selective absorption enhancement in photonic crystal defect cavities", Proc. SPIE 6480, Photonic Crystal Materials and Devices VI, 64801C (6 February 2007); https://doi.org/10.1117/12.699410

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