Continuous-Wave Pumped Perovskite Lasers with Device Area Below 1 µm2
© 2023 Wiley-VCH GmbH.
| Publié dans: | Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 30 vom: 01. Juli, Seite e2302170 |
|---|---|
| Auteur principal: | |
| Autres auteurs: | , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2023
|
| Accès à la collection: | Advanced materials (Deerfield Beach, Fla.) |
| Sujets: | Journal Article continuous-wave exciton-polaritons lasing microlasers perovskites |
| Résumé: | © 2023 Wiley-VCH GmbH. Continuous-wave (CW) pumped lasers with device areas below 1 µm2 constitute a key step to meeting the energy efficiency requirement for on-chip optical communications. However, a debate about whether a sub-micrometer device size and low threshold can be simultaneously satisfied has persisted owing to insurmountable radiation losses when approaching the optical diffraction limit. Herein, a record-small CW optically pumped perovskite laser with a device area of 0.65 µm2 is demonstrated. The thresholds of sub-micrometer lasers can be found lower than those of several-micrometer counterparts, and are ascribed to the enlarged group refractive index and modal confinement resulting from the enhanced exciton-photon coupling. Moreover, the operation temperature is elevated to 150 K through the reduction in heat generation. These findings unveil the potential of exciton-polaritons in laser miniaturization, providing an alternative for developing low-threshold semiconductor lasers without artificial optical cavities, to approach the optical diffraction limit |
|---|---|
| Description: | Date Revised 27.07.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202302170 |