Open AccessElectrically pumped quantum post vertical cavity surface emitting lasers
Author(s) -
Hyochul Kim,
Matthew T. Rakher,
Dirk Bouwmeester,
Pierre M. Petroff
Publication year - 2009
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.3112578
Subject(s) - lasing threshold , optoelectronics , laser , quantum dot laser , materials science , gain switching , semiconductor laser theory , quantum well , optics , physics , semiconductor , wavelength
We demonstrate low threshold electrically pumped lasing in oxide apertured vertical cavity surface emitting lasers with quantum posts (QPs) as the active medium. A lasing threshold current as low as 12 μA is achieved at 7 K and room temperature continuous wave lasing is also demonstrated in the cavities with quality factors of ∼10 000. At low temperature, the QP devices show remarkably lower lasing current thresholds compared to equivalent quantum dot devices.
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