Demonstration of a nearly ideal wavelength-selective optical mirror using a metamaterial-enabled dielectric coating

S. Yun, F. Namin, D. H. Werner, T. S. Mayer, C. Bungay, C. Rivero-Baleine, L. Zhang

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Abstract

We report a thin nanostructured dielectric optical coating with a nearly ideal polarization insensitive reflectance at a wavelength of 3.46 μm. A genetic algorithm was used to optimize the doubly periodic amorphous silicon subwavelength nanostructure to satisfy a metamaterial-enabled reflecting condition at this resonance wavelength. Optical measurements of the nanofabricated dielectric coating had a peak reflectance of 99.76 at 3.46 μm, showing strong agreement with simulation. The average reflectance measured at nine positions on a 2.54 cm × 2.54 cm coating demonstrated a high optical uniformity of 99.5 ± 0.1 across the large-area component. These results outline a route to design and manufacture low-loss metamaterial-enabled dielectric optical coatings.

Original languageEnglish (US)
Article number171114
JournalApplied Physics Letters
Volume102
Issue number17
DOIs
Publication statusPublished - Apr 29 2013

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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