DocumentCode
3846064
Title
Polarization Properties of Columnar Quantum Dots: Effects of Aspect Ratio and Compositional Contrast
Author
Philipp Ridha;Lianhe H. Li;Meletios Mexis;Peter M. Smowton;Janusz Andrzejewski;Grzegorz Sek;Jan Misiewicz;Eoin P. O´Reilly;Gilles Patriarche;Andrea Fiore
Author_Institution
Inst. of Photonics & Quantum Electron., Ecole Polytech. Fed. de Lausanne, Lausanne, Switzerland
Volume
46
Issue
2
fYear
2010
Firstpage
197
Lastpage
204
Abstract
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.
Keywords
"Quantum dots","Gallium arsenide","Optical polarization","Semiconductor optical amplifiers","Capacitive sensors","Quantum dot lasers","Optical amplifiers","Shape","Stationary state","Photonics"
Journal_Title
IEEE Journal of Quantum Electronics
Publisher
ieee
ISSN
0018-9197
Type
jour
DOI
10.1109/JQE.2009.2030339
Filename
5357487
Link To Document