Metamaterial Coatings for Broadband Asymmetric Mirrors

Details Metamaterial Coatings for Broadband Asymmetric Mirrors Metamaterial Coatings for Broadband Asymmetric Mirrors

2006-11-10

arxiv.org/abs/physics/0611109v2

Opt. Lett. 32, 1770-1772 (2007)

Physics

Optics

4 pages, 4 figures, submitted to Optics Letters

Scientific paper

10.1364/OL.32.001770

We report on design and fabrication of nano-composite metal-dielectric thin film coatings with high reflectance asymmetries. Applying basic dispersion engineering principles to model a broadband and large reflectance asymmetry, we obtain a model dielectric function for the metamaterial film, closely resembling the effective permittivity of disordered metal-dielectric nano-composites. Coatings realized using disordered nanocrystalline silver films deposited on glass substrates confirm the theoretical predictions, exhibiting symmetric transmittance, large reflectance asymmetries and a unique flat reflectance asymmetry.

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