Measurements of laser properties of organic semiconductors to predict organic laser thresholds

Mouhamadou Lamine Coly; Amani Ouirimi; Nixson Loganathan; Mahmoud Chakaroun; Azzedine Boudrioua; Daan Lenstra; Alexis P. A. Fischer

doi:10.1051/epjconf/202533508010

Open Access

Issue		EPJ Web Conf. Volume 335, 2025 EOS Annual Meeting (EOSAM 2025)


Article Number		08010
Number of page(s)		2
Section		Topical Meeting - Optical Materials
DOI		https://doi.org/10.1051/epjconf/202533508010
Published online		22 September 2025

EPJ Web of Conferences 335, 08010 (2025)
https://doi.org/10.1051/epjconf/202533508010

Measurements of laser properties of organic semiconductors to predict organic laser thresholds

Mouhamadou Lamine Coly¹^,2, Amani Ouirimi¹^,2, Nixson Loganathan¹^,2, Mahmoud Chakaroun¹^,2, Azzedine Boudrioua¹, Daan Lenstra³ and Alexis P. A. Fischer¹^,2^*

¹ - Université Sorbonne Paris Nord, Laboratoire de Physique des Lasers, UMR CNRS 7538, 99 avenue JB Clément, 93430 Villetaneuse- France
² - Université Sorbonne Paris Nord , Centrale de Proximité en Nanotechnologies de Paris Nord, 99 avenue JB Clément, 93430 Villetaneuse- France
³ - Institute of Photonics Integration, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlandsa

^* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.

Published online: 22 September 2025

Abstract

In the context of the quest of organic laser diode, we propose a method to compare organic gain semiconductors in terms of laser threshold before integrating them into laser cavity. This method is based on three types of measurements for each material: 1-measurements of absorption and photoluminescence spectra to evaluate the re-absorption, 2-measurement of fluorescence lifetimes linking the potential laser gain to the current in the diode and 3-measurement of the gain of the amplified spontaneous emission. This approach is validated by laser threshold measurements carried out under optical pumping for two organic compounds DCM and DCJTB deposited on laser cavities.

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