Multiscale analysis of subwavelength imaging with metal-dielectric multilayers

Abstract

Imaging with a layered superlens is a spatial filtering operation characterized by the point spread function (PSF). We show that in the same optical system the image of a narrow sub-wavelength Gaussian incident field may be surprisingly dissimilar to the PSF, and the width of PSF is not a straightforward measure of resolution. FWHM or std. dev. of PSF give ambiguous information about the actual resolution, and imaging of objects smaller than the FWHM of PSF is possible. A multiscale analysis of imaging gives good insight into the peculiar scale-dependent properties of sub-wavelength imaging.

3 pages, 5 figures,

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Cited by in corpus (5)

• Sub-wavelength diffraction-free imaging with low-loss metal-dielectric multilayers
• Analytical Study of Sub-Wavelength Imaging by Uniaxial Epsilon-Near-Zero Metamaterial Slabs
• Optimised low-loss multilayers for imaging with sub-wavelength resolution in the visible wavelength range
• Two-dimensional point spread matrix of layered metal-dielectric imaging elements
• Fourier Optics approach to imaging with sub-wavelength resolution through metal-dielectric multilayers