Superlensing properties of one-dimensional dielectric photonic crystals
Salvatore Savo, Emiliano Di Gennaro, Antonello Andreone
TL;DR
This paper reports the experimental demonstration of superlensing in a one-dimensional dielectric photonic crystal, achieving subwavelength resolution and enhanced imaging through surface corrugation.
Contribution
It introduces the first experimental observation of superlensing in 1D dielectric photonic crystals and shows how surface corrugation improves imaging performance.
Findings
Achieved subwavelength resolution in specific frequency bands.
Surface corrugation significantly enhances transmission and resolution.
Demonstrated superlensing effect in a flat dielectric photonic crystal lens.
Abstract
We present the experimental observation of the superlensing effect in a slab of a one-dimensional photonic crystal made of tilted dielectric elements. We show that this flat lens can achieve subwavelength resolution in different frequency bands. We also demonstrate that the introduction of a proper corrugation on the lens surface can dramatically improve both the transmission and the resolution of the imaged signal.
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