Far-field super-resolution imaging with a planar hyperbolic metamaterial lens beyond the Fabry-Perot resonance condition

TL;DR

This paper demonstrates that a planar hyperbolic metamaterial lens can achieve far-field super-resolution imaging beyond the Fabry-Perot resonance condition, even with large thickness and in the presence of losses.

Contribution

The authors design a PHML capable of super-resolution imaging at distances ten times the wavelength, robust against losses, and feasible to fabricate with layered metal-dielectric structures.

Findings

Achieves super-resolution imaging beyond the Fabry-Perot resonance.

High transmission of both radiative and evanescent waves.

Robust performance despite material losses.

Abstract

We demonstrate achieving the far-field super-resolution imaging can be realized by using a planar hyperbolic metamaterial lens (PHML), beyond the Fabry-Perot resonance condition. Although the thickness of the PHML is much larger than wavelength, the PHML not only can transmit radiative waves and evanescent waves with high transmission, but also can collect all the waves in the image region with the amplitudes of them being the same order of magnitude. We present a design for a PHML to realize the far-field super-resolution imaging, with the distance between the sources and the images 10 times larger than wavelength. We show the superresolution of our PHML is robust against losses, and the PHML can be fabricated by periodic stacking of metal and dielectric layers.