Effect of dielectric medium anisotropy on the polarization degree of emission from a single quantum dash
Abstract
Excitonic emission from single InAs/InGaAlAs/InP quantum dashes has been investigated in the context of degree of linear polarization by post-growth modification of its surrounding dielectric medium. We present optical spectroscopy measurements on a symmetric squared pedestal structures (mesas), and asymmetric rectangular ones oriented parallel or perpendicular to the main in-plane axis of the dashes [1-10]. Polarization resolved microphotoluminescence shows a significant quantitative modification of the degree of linear polarization value from -20% up to 70%. These results have been confronted with calculations of the coupling between the exciton transition dipole moment and electromagnetic field distributed in the vicinity of a quantum dash inside a processed mesa.
Citation
Mrowinski , P , Tarnowski , K , Olszewski , J , Somers , A , Kamp , M , Höfling , S , Reithmaier , J P , Urbanczyk , W , Misiewicz , J , Machnikowski , P & Sek , G 2016 , Effect of dielectric medium anisotropy on the polarization degree of emission from a single quantum dash . in Acta Physica Polonica A : Proceedings of the 44th International School and Conference on the Physics of Semiconductors "Jaszowiec 2015", Wisła, Poland, June 20-25, 2015 . vol. 129 , Institute of Physics, Polish Academy of Sciences , pp. A48-A52 , 44th Jaszowiec International School and Conference on the Physics of Semiconductors (IS and CPS) , Poland , 20/06/15 . https://doi.org/10.12693/APhysPolA.129.A-48 conference
Publication
Acta Physica Polonica A
Type
Conference item
Description
This research was supported by the Polish Ministry of Science and Higher Education/the National Science Center Grant No. 2011/02/A/ST3/00152. The experiments have partially been performed within the laboratory infrastructure financed by the Polish Ministry of Science and Higher Education Grant No. 6167/IA/119/2012.Collections
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