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Proceedings Paper

Fabrication of self-assembled photonic-crystal structures by centrifugation and spin coating
Author(s): Yan Xu; Garrett J. Schneider; Eric D. Wetzel; Dennis W. Prather
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Paper Abstract

We have developed a simple, low-cost process for the fabrication of high-quality three-dimensional artificial-opal and inverse-opal photonic crystals. The process is based on the self-assembly of a template from a uniform suspension of polystyrene microspheres, which is sintered for added strength and subsequently back-filled with high-index material. The template formation is assisted by a combination of centrifugation and spin-annealing, which requires relatively short process times and inexpensive laboratory equipment. The process has been used to fabricate polycrystalline photonic crystals with photonic stop gaps in the mid-IR portion of the spectrum. Details of the fabrication process and fabricated samples will be presented. In addition, Fourier-transform IR reflection spectroscopy has been used to characterize the samples; the results are shown to be in excellent agreement with band structure diffraction calculations.

Paper Details

Date Published: 3 November 2003
PDF: 9 pages
Proc. SPIE 5183, Lithographic and Micromachining Techniques for Optical Component Fabrication II, (3 November 2003); doi: 10.1117/12.506337
Show Author Affiliations
Yan Xu, Univ. of Delaware (United States)
Garrett J. Schneider, Univ. of Delaware (United States)
Eric D. Wetzel, Army Research Lab. (United States)
Dennis W. Prather, Univ. of Delaware (United States)

Published in SPIE Proceedings Vol. 5183:
Lithographic and Micromachining Techniques for Optical Component Fabrication II
Ernst-Bernhard Kley; Hans Peter Herzig, Editor(s)

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