Air-compatible Broadband Angular Selective Material Systems

TL;DR

This paper reports the first experimental realization of an air-compatible broadband angular selective optical filter using stacked photonic crystals, expanding potential applications in optical systems.

Contribution

It introduces the first air-operable broadband angular selective filter based on photonic crystal stacking, advancing previous liquid-based designs.

Findings

Successful demonstration of air-compatible operation

Broadband angular selectivity achieved

Potential for practical optical applications

Abstract

An optical broadband angular selective filter achieved by stacking of one-dimensional photonic crystals has promising potential in various applications. In this report, we demonstrate the first experimental realization of an optical broadband angular selective filter capable of operation in air, in contrast to our previous demonstration in index matching liquid.