Effects of disorder on superlensing in two dimensional photonic crystal slabs

TL;DR

This paper investigates how disorder affects superlensing capabilities in two-dimensional photonic crystal slabs, demonstrating that such crystals can act as isotropic negative index media for perfect imaging.

Contribution

It introduces the concept of using hexagonal 2D photonic crystals as isotropic negative index materials and analyzes the impact of disorder on their superlensing performance.

Findings

Photonic crystal slabs can achieve n_eff = -1 for superlensing.

Disorder impacts the quality of the superlensed image.

Surface effects influence the superlensing in disordered structures.

Abstract

We demonstrate that a hexagonal two dimensional photonic crystal can act as an isotropic medium with an effective refractive index n_eff = -1, therefore capable of unrestricted superlensing. We study the superlensing by calculating the photonic band structure, and the propagation maps of the electromagnetic waves through slabs of the photonic crystal. We investigate the surface, and the crystal disorder effects on the superlensing, by analyzing the light intensity profile at the image of a line source.