Phys. Rev. Lett. 91, 043901 (2003) [4 pages]Multiple Higher-Order Stop Gaps in Infrared Polymer Photonic CrystalsReceived 21 March 2003; published 21 July 2003 Engineering of stop gaps between higher photonic bands provides an alternative to miniaturization of photonic crystals. Femtosecond laser microfabrication of highly correlated void channel polymer microstructures results in photonic crystals with large stop gaps and a multitude of higher-order gaps in the mid- and near-infrared spectral regions. The gap wavelengths obey Bragg’s law. Consistent with theory, varying the woodpile structure unit cell allows for tuning the number of higher-order gaps, and transitions from mere resonant Bragg scattering to stop band total reflection are observed. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.043901
DOI:
10.1103/PhysRevLett.91.043901
PACS:
42.70.Qs, 42.25.Bs, 78.67.Pt, 81.16.Rf
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