Biomimetic random lasers with tunable spatial and temporal coherence

TL;DR

This paper introduces biomimetic random lasers using dye-doped titania with paper-like disordered structures, demonstrating tunable spatial and temporal coherence through mode interactions and pumping control.

Contribution

It presents a novel approach to creating tunable random lasers inspired by biological structures, with detailed analysis of mode interactions and device performance control.

Findings

Observation of sharp electromagnetic resonances with broad spatial extension

Modes interact and compete over wide length scales

Device performance can be precisely controlled by pumping

Abstract

Biologically inspired photonic structures are the key for technological advances and for miniaturized lasers. Here random lasers in dye-doped titania with the disordered structure of paper are proposed. Sharp electromagnetic resonances with unexpected broad spatial extension are reported. The modes interact and compete on wide length scales, enabling to control precisely the device performance by acting on the pumping