TITLE

Reduced threshold current of a quantum dot laser in a short period superlattice of indirect-band gap

AUTHOR(S)
Sun, Gregory; Soref, Richard A.; Khurgin, Jacob B.
PUB. DATE
May 2004
SOURCE
Applied Physics Letters;5/10/2004, Vol. 84 Issue 19, p3861
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We propose the idea of making quantum dot lasers by embedding direct-band gap quantum dots in a short period superlattice whose band gap is indirect. This technique reduces the threshold current and its temperature dependence. We show that a higher characteristic-temperature T0 can be achieved in a quantum dot laser with indirect GaAs/AlAs superlattice barriers compared to that with direct GaAs barriers.
ACCESSION #
13029136

 

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