Midinfrared surface-emitting PbSe/PbEuTe quantum-dot lasers

Citation
G. Springholz et al., Midinfrared surface-emitting PbSe/PbEuTe quantum-dot lasers, APPL PHYS L, 79(9), 2001, pp. 1225-1227
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
0003-6951 → ACNP
Volume
79
Issue
9
Year of publication
2001
Pages
1225 - 1227
Database
ISI
SICI code
0003-6951(20010827)79:9<1225:MSPQL>2.0.ZU;2-8
Abstract
Midinfrared laser emission from self-organized PbSe quantum dots in a high- finesse vertical-cavity surface-emitting laser structure is reported. The s tructure was grown by molecular-beam epitaxy and consists of high reflectiv ity epitaxial EuTe/PbEuTe Bragg mirrors with a PbSe/Pb1-xEuxTe quantum-dot superlattice as the active region. Narrow laser emission at 4.2-3.9 mum ind uced by optical pumping is achieved at temperatures up to 90 K. The observa tion of simultaneous two-mode emission indicates a width of the inhomogeneo usly broadened PbSe dot gain spectrum of about 18 meV. (C) 2001 American In stitute of Physics.