Amplification of the phosphorescent emission guided by a pulsed laser stripe

TL;DR

This study demonstrates that pulsed laser stripe excitation can guide and amplify phosphorescent emission in a solid film, revealing potential for high-gain triplet state applications.

Contribution

It introduces a method to guide and amplify phosphorescent emission using pulsed laser stripes in a solid-state film, highlighting higher gain in triplet states.

Findings

Guided emission reaches the edge of the film.

Higher gain characteristics observed in triplet states.

Emission intensity depends on stripe length and laser intensity.

Abstract

Phosphorescent emissions at room temperature from solid-state self sustained film fabricated using phenazine derivative molecules blended in a solution of poly(methyl methacrylate) were investigated at steady-state experimental conditions. Stripe excitation by a pulsed laser at different levels of intensities and different lengths of stripes, originates a guided emission up to the edge of the film, enabling us to assume higher gain characteristics for triplet states of the medium, due to the relatively higher contribution of the total integrated area for the phosphorescent part of the emission spectra.