Absolute negative refraction and imaging of unpolarized electromagnetic waves by two-dimensional photonic crystals

TL;DR

This paper demonstrates that two-dimensional photonic crystals can achieve absolute negative refraction for all polarizations and angles, enabling unpolarized light imaging with potential loss compensation.

Contribution

It introduces the concept of absolute all-angle negative refraction in 2D photonic crystals for both polarizations, enabling unpolarized light imaging.

Findings

Absolute negative refraction for both polarizations confirmed

All-angle negative refraction demonstrated

Potential for loss compensation discussed

Abstract

Absolute negative refraction regions for both polarizations of electromagnetic wave in two-dimensional photonic crystal have been found through both the analysis and the exact numerical simulation. Especially, absolute all-angle negative refraction for both polarizations has also been demonstrated. Thus, the focusing and image of unpolarized light can be realized by a microsuperlens consisting of the two-dimensional photonic crystals. The absorption and compensation for the losses by introducing optical gain in these systems have also been discussed.