Diffractionless propagation through Kapitza stratified media

Abstract

We show that in the presence of a rapidly modulated dielectric permittivity with a large modulation depth (Kapitza medium) a novel and robust regime of diffractionless electromagnetic propagation occurs. This happens when the mean value to depth ratio of the dielectric profile is comparable to the small ratio between the modulation period and the wavelength. We show that the standard effective medium theory is inadequate to describe the proposed regime and that, its occurrence is not substantially hampered by medium losses. We check the feasibility of the proposed regime by means of a large modulation depth metal-dielectric layered medium whose subwavelength imaging properties are analytically investigated.

5 pages, 3 figures

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• Optical Hyperlens: Far-field imaging beyond the diffraction limit
• Non-local effects in effective medium response of nano-layered meta-materials
• Nonlinearity Management in Optics: Experiment, Theory, and Simulation
• Time independent description of rapidly oscillating potentials
• Comparison of imaging with sub-wavelength resolution in the canalization and resonant tunnelling regimes

Cited by in corpus (3)

• Nonlocal homogenization theory in metamaterials: effective electromagnetic spatial dispersion and artificial chirality
• Reconfigurable photoinduced metamaterials in the microwave regime
• Rapidly-oscillating scatteringless non-Hermitian potentials and the absence of Kapitza stabilization