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Huisman SR, Nair RV, Hartsuiker A, et al. Observation of sub-Bragg diffraction of waves in crystals. Phys Rev Lett. 2012;108(8):083901doi: 10.1103/PhysRevLett.108.083901.
Huisman, S. R., Nair, R. V., Hartsuiker, A., Woldering, L. A., Mosk, A. P., & Vos, W. L. (2012). Observation of sub-Bragg diffraction of waves in crystals. Physical review letters, 108(8), 083901. https://doi.org/10.1103/PhysRevLett.108.083901
Huisman, Simon R, et al. "Observation of sub-Bragg diffraction of waves in crystals." Physical review letters vol. 108,8 (2012): 083901. doi: https://doi.org/10.1103/PhysRevLett.108.083901
Huisman SR, Nair RV, Hartsuiker A, Woldering LA, Mosk AP, Vos WL. Observation of sub-Bragg diffraction of waves in crystals. Phys Rev Lett. 2012 Feb 24;108(8):083901. doi: 10.1103/PhysRevLett.108.083901. Epub 2012 Feb 22. PMID: 22463531.
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Phys Rev Lett. 2012 Feb 24;108(8):083901. doi: 10.1103/PhysRevLett.108.083901. Epub 2012 Feb 22.

Observation of sub-Bragg diffraction of waves in crystals.

Physical review letters

Simon R Huisman, Rajesh V Nair, Alex Hartsuiker, Léon A Woldering, Allard P Mosk, Willem L Vos

Affiliations

  1. Complex Photonic Systems (COPS), MESA + Institute for Nanotechnology, University of Twente, Enschede, The Netherlands. [email protected]

PMID: 22463531 DOI: 10.1103/PhysRevLett.108.083901

Abstract

We investigate the diffraction conditions and associated formation of stop gaps for waves in crystals with different Bravais lattices. We identify a prominent stop gap in high-symmetry directions that occurs at a frequency below the ubiquitous first-order Bragg condition. This sub-Bragg-diffraction condition is demonstrated by reflectance spectroscopy on two-dimensional photonic crystals with a centered rectangular lattice, revealing prominent diffraction peaks for both the sub-Bragg and first-order Bragg conditions. These results have implications for wave propagation in 2 of the 5 two-dimensional Bravais lattices and 7 out of 14 three-dimensional Bravais lattices, such as centered rectangular, triangular, hexagonal, and body-centered cubic.

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