Optical Anisotropy of Electronic Excitations in Elliptical Quantum Dots

Details Optical Anisotropy of Electronic Excitations in Elliptical Quantum Dots Optical Anisotropy of Electronic Excitations in Elliptical Quantum Dots

2008-10-31

arxiv.org/abs/0810.5649v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 4 figures

Scientific paper

10.1063/1.3080658

The authors report that anisotropic confining potentials in laterally-coupled semiconductor quantum dots (QDs) have large impacts in optical transitions and energies of inter-shell collective electronic excitations. The observed anisotropies are revealed by inelastic light scattering as a function of the in-plane direction of light polarization and can be finely controlled by modifying the geometrical shape of the QDs. These experiments show that the tuning of the QD confinement potential offers a powerful method to manipulate electronic states and far-infrared inter-shell optical transitions in quantum dots.

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