Lasing of Quantum-Dot Micropillar Lasers under Elevated Temperatures
Mesoscale and Nanoscale Physics
2026-04-30 v1 Optics
Abstract
A comprehensive numerical modelling of microcavity parameters for micropillar lasers with optical pumping was presented. The structure with a hybrid dielectric-semiconductor top mirror has a significantly higher calculated quality-factor (~65000 for 5 m pillar) due to better vertical mode confinement. The minimum laser threshold (~370 W for 5 m pillar) coincided with a temperature of 130 K, which is close to zero gain to cavity detuning. Lasing up to 220 K was demonstrated with a laser threshold of about 2.2 mW.
Cite
@article{arxiv.2407.16271,
title = {Lasing of Quantum-Dot Micropillar Lasers under Elevated Temperatures},
author = {Andrey Babichev and Ivan Makhov and Natalia Kryzhanovskaya and Alexey Blokhin and Yuriy Zadiranov and Yulia Salii and Marina Kulagina and Mikhail Bobrov and Alexey Vasiliev and Sergey Blokhin and Nikolay Maleev and Maria Tchernycheva and Leonid Karachinsky and Innokenty Novikov and Anton Egorov},
journal= {arXiv preprint arXiv:2407.16271},
year = {2026}
}