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Title: Super-resolution with a positive epsilon multi-quantum-well super-lens

We design an anisotropic and dichroic quantum metamaterial that is able to achieve super-resolution without the need for a negative permittivity. When exploring the parameters of the structure, we take into account the limits of semiconductor fabrication technology based on quantum well stacks. By heavily doping the structure with free electrons, we infer an anisotropic effective medium with a prolate ellipsoid dispersion curve which allows for near-diffractionless propagation of light (similar to an epsilon-near-zero hyperbolic lens). This, coupled with low absorption, allows us to resolve images at the sub-wavelength scale at distances 6‚ÄČtimes greater than equivalent natural materials.
Authors:
; ; ;  [1]
  1. Experimental Solid State Group, Department of Physics, Imperial College London, London SW7 2AZ (United Kingdom)
Publication Date:
OSTI Identifier:
22253203
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 26; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION; ANISOTROPY; DESIGN; FABRICATION; IMAGES; QUANTUM WELLS; RESOLUTION; SEMICONDUCTOR MATERIALS; STACKS