Room-temperature, electrically-pumped multiple-active-regionVCSELs with high differential efficiency at 1.55 µm
- 24 June 1999
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 35 (13) , 1084-1085
- https://doi.org/10.1049/el:19990760
Abstract
All-monolithic, single-step grown, room-temperature, electrically-pumped vertical cavity lasers based on III-As compounds are presented witha threshold current density 570 A/cm2, a differential efficiency greater than 50% and a threshold voltage of 3 V. The lasers employ three active regions, epitaxially stacked in series with Esaki junctions to increase the gain and the differential efficiency.Keywords
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