Threshold behaviour in Light Reflection Tuning the Disorder in Photonic Media

TL;DR

This paper investigates how tuning disorder in photonic media affects light reflection, revealing a linear reflection behavior with a slope change linked to a specific disorder level quantified by Shannon index.

Contribution

It introduces an engineered photonic structure demonstrating a controllable reflection slope change due to disorder, quantified by Shannon index, across a broad wavelength range.

Findings

Reflection shows linear behavior with a slope change.

Slope change correlates with a specific disorder level.

Disorder quantified by Shannon index influences optical properties.

Abstract

The optical properties of materials are strongly influenced by disorder. Control of disorder in photonic materials can unveil interesting optical properties. We have found an engineered photonic structure for which the average light reflection shows a linear behaviour with a slope change in a broad range of wavelengths. Such change in slope is due to a specific degree of disorder, which is quantified by the Shannon index.