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arXiv · 1012.5263

Signature of a three-dimensional photonic band gap observed on silicon inverse woodpile photonic crystals

Simon R. Huisman·Rajesh V. Nair·Léon A. Woldering·Merel D. Leistikow·Allard P. Mosk·Willem L. Vos
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Abstract

We have studied the reflectivity of CMOS-compatible three-dimensional silicon inverse woodpile photonic crystals at near-infrared frequencies. Polarization-resolved reflectivity spectra were obtained from two orthogonal crystal surfaces corresponding to 1.88 pi sr solid angle. The spectra reveal broad peaks with high reflectivity up to 67 % that are independent of the spatial position on the crystals. The spectrally overlapping reflectivity peaks for all directions and polarizations form the signature of a broad photonic band gap with a relative bandwidth up to 16 %. This signature is supported with stopgaps in plane wave bandstructure calculations and with the frequency region of the expected band gap.

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Simon R. Huisman, Rajesh V. Nair, Léon A. Woldering, Merel D. Leistikow, Allard P. Mosk, Willem L. Vos. 2011-05-20. Signature of a three-dimensional photonic band gap observed on silicon inverse woodpile photonic crystals. https://doi.org/10.1103/physrevb.83.205313

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