Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-01-08
Superlattices and microstructures, volume 47, january 2010, page 78-82
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
PLMCN9 conference proceedings
Scientific paper
We report on the optical properties of a newly developed site-controlled InGaAs Dots in GaAs barriers grown in pre-patterned pyramidal recesses by metalorganic vapour phase epitaxy. The inhomogeneous broadening of excitonic emission from an ensemble of quantum dots is found to be extremely narrow, with a standard deviation of 1.19 meV. A dramatic improvement in the spectral purity of emission lines from individual dots is also reported (18-30 ueV) when compared to the state-of-the-art for site controlled quantum dots.
Dimastrodonato Valeria
Mereni Lorenzo O.
Pelucchi Emanuele
Young Robert J.
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