Photonic bands and defect modes in metallo-dielectric photonic crystal slabs

TL;DR

This paper investigates a metallo-dielectric photonic crystal slab, demonstrating band gaps and defect modes that enable advanced infrared device applications like filters and thermal emitters.

Contribution

It introduces the design and analysis of metallic photonic structures with dielectric features, expanding their potential for infrared applications.

Findings

Identification of photonic band gaps in metallic structures

Demonstration of defect modes for spectral tuning

Potential applications in infrared photodetectors and emitters

Abstract

Photonic components based on structured metallic elements show great potential for device applications where field enhancement and confinement of the radiation on a subwavelength scale is required. In this paper we report a detailed study of a prototypical metallo-dielectric photonic structure, where features well known in the world of dielectric photonic crystals, like band gaps and defect modes, are exported to the metallic counterpart, with interesting applications to infrared science and technology, as for instance in quantum well infrared photodetectors, narrow-band spectral filters, and tailorable thermal emitters.