Strain-tuning of quantum dot optical transitions via laser-induced surface defects

Details Strain-tuning of quantum dot optical transitions via laser-induced surface defects Strain-tuning of quantum dot optical transitions via laser-induced surface defects

2011-07-13

arxiv.org/abs/1107.2486v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 6 figures. To appear in Phys. Rev. B

Scientific paper

We discuss the fine-tuning of the optical properties of self-assembled quantum dots by the strain perturbation introduced by laser-induced surface defects. We show experimentally that the quantum dot transition red-shifts, independently of the actual position of the defect, and that such frequency shift is about a factor five larger than the corresponding shift of a micropillar cavity mode resonance. We present a simple model that accounts for these experimental findings.

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