Narrow optical filtering with plasmonic nanoshells

TL;DR

This paper proposes a novel method for creating narrow optical band pass filters using plasmonic nanoshells, which achieve high selectivity through tunable transparency and absorption properties.

Contribution

It introduces a new type of optical filter based on dielectric-metallic nanoshells with adjustable transparency and absorption characteristics.

Findings

Nanoshells can be tuned for specific wavelength transparency.

The filters exhibit high selectivity with strong outside absorption.

Potential applications in optical processing and display technologies.

Abstract

Narrow optical band pass filters are widely used in systems with optical processing of information, color displays development and optical computers. We show that such ultra filters can be created by means of nanoparticles which consist of a dielectric sphere and a metallic shell. The components can be adjusted such that there is a remarkable transparency at the desired wavelength range, while a strong absorption takes place outside of this region.