Three-dimensional emission from organic Fabry-Perot microlasers

TL;DR

This paper investigates the three-dimensional emission patterns of organic Fabry-Perot microlasers, revealing out-of-plane emission influenced by cavity support structures and modeled through diffraction and reflection effects.

Contribution

It provides the first detailed 3D emission measurements of organic Fabry-Perot microlasers and introduces a model explaining out-of-plane emission based on diffraction and substrate reflections.

Findings

Out-of-plane emission varies with cavity support structure.

Emission patterns are explained by a combined diffraction and reflection model.

Significant differences observed between fully supported and pedestal-supported resonators.

Abstract

We measured the far-field emission patterns in three dimensions of flat organic dye microlasers using a solid angle scanner. Polymer-based microcavities of ribbon shape (i.e., Fabry-Perot type) were investigated. Out of plane emission from the cavities was observed, with significant differences for the two cases of resonators either fully supported by the substrate or sustained by a pedestal. In both cases, the emission diagrams are accounted for by a model combining diffraction at the cavity edges and reflections from the substrate.