Superlens based on metal-dielectric composites

By Wenshan Cai, D. Genov, Vladimir M. Shalaev. 2005

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Pure noble metals are typically considered to be the materials of choice for a near-field superlens that allows subwavelength resolution by recovering both propagating and evanescent waves. However, a superlens based on bulk metal can operate only at a single frequency for a given dielectric host. In this paper, it is shown that a composite metal-dielectric film, with an appropriate metal filling factor, can operate at practically any desired wavelength in the visible and near-infrared ranges. Theoretical analysis and simulations verify the feasibility of the proposed lens.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films

View Paper: https://www.semanticscholar.org/paper/8b452566c92d46d05dbc3979ec9cc70ddb9891a7