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Control of valence band states in pyramidal quantum dot-in-dot semiconductor heterostructures
Ecole Polytechnique Fédérale de Lausanne .
Ecole Polytechnique Fédérale de Lausanne .ORCID iD: 0000-0002-4547-6673
Ecole Polytechnique Fédérale de Lausanne .
Ecole Polytechnique Fédérale de Lausanne .
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2007 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 91, no 24Article in journal (Refereed) Published
Abstract [en]

The character of the hole states in a pyramidal GaAsAlGaAs quantum dot-in-dot (DiD) heterostructure is shown to be controllable by tailoring the confinement potential shape. The change in ground valence band state from heavy hole like to light hole like is demonstrated by side-view polarization resolved photoluminescence measurements. The experimental findings are supported by three-dimensional numerical model calculations. The results are applicable for polarization control in quantum dot photonic devices. © 2007 American Institute of Physics.

Place, publisher, year, edition, pages
2007. Vol. 91, no 24
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Natural Sciences
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URN: urn:nbn:se:liu:diva-44043DOI: 10.1063/1.2820693Local ID: 75478OAI: oai:DiVA.org:liu-44043DiVA: diva2:264904
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2015-01-23

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Karlsson, Fredrik

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