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research article
Polarization Properties of Columnar Quantum Dots: Effects of Aspect Ratio and Compositional Contrast
We report a systematic theoretical and experimental investigation of the polarization properties of columnar quantum dots (CQDs) with extremely large aspect ratio and high compositional contrast. A strong variation of the polarization of the dominant interband transitions as a function of the CQD composition and aspect ratio is predicted by the theory and observed experimentally. In optimized InAs CQDs grown on GaAs, dominant emission and lasing is obtained in the transverse-magnetic polarization, which shows the potential of this approach for polarization-independent amplifiers on GaAs.
Type
research article
Web of Science ID
WOS:000273087700007
Authors
Ridha, Philipp
•
Li, Lianhe H.
•
Mexis, Meletios
•
Smowton, Peter M.
•
Andrzejewski, Janusz
•
Sek, Grzegorz
•
Misiewicz, Jan
•
O'Reilly, Eoin P.
•
Patriarche, Gilles
•
Publication date
2010
Published in
Volume
46
Start page
197
End page
204
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
December 16, 2011
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