TITLE

Whispering gallery mode lasing in high quality GaAs/AlAs pillar microcavities

AUTHOR(S)
Jaffrennou, P.; Claudon, J.; Bazin, M.; Malik, N. S.; Reitzenstein, S.; Worschech, L.; Kamp, M.; Forchel, A.; Gérard, J.-M.
PUB. DATE
February 2010
SOURCE
Applied Physics Letters;2/15/2010, Vol. 96 Issue 7, p071103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report whispering gallery mode (WGM) lasing from high quality GaAs/AlAs micropillars with embedded InAs quantum dots, under continuous optical pumping. For temperatures ranging from 5 to 100 K, simultaneous lasing from TE1,1,m WGMs is observed for pillar diameters in the 3–4 μm range. Spectral linewidths and energy shifts of the lasing modes are analyzed as a function of the pump power. Thanks to the efficient heat sinking provided by the micropillar geometry, a clear line narrowing is observed above threshold. Moreover, the lasing mode energy remains stable for pump power as large as six times the lasing threshold.
ACCESSION #
48199527

 

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