Temperature dependent high resolution resonant spectroscopy on a charged quantum dot

Kroner, M., Weiss, K. M., Seidl, S., Warburton, R. J., Badolato, A. , Petroff, P. M. and Karrai, K. (2009) Temperature dependent high resolution resonant spectroscopy on a charged quantum dot. Physica Status Solidi B: Basic Solid State Physics, 246(4), pp. 795-798. (doi: 10.1002/pssb.200880610)

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Abstract

We present temperature dependent high resolution resonant optical spectroscopy on a single, negatively charged InGaAs quantum dot. We performed laser transmission measurements yielding the natural linewidth of the excitonic ground state transition of a quantum dot in a temperature range from 4.2 K up to 25 K. Here, we describe the linewidth evolution and the temperature induced red shift of the resonance energy with simple models based on the exciton–phonon coupling in the quantum dot. The resonant spectroscopy measurements are complemented with results from non-resonant PL measurements on the very same quantum dot. Here we observe a simple linear behavior of the linewidth according to an effect of a fluctuating environment.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Badolato, Professor Antonio
Authors: Kroner, M., Weiss, K. M., Seidl, S., Warburton, R. J., Badolato, A., Petroff, P. M., and Karrai, K.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Physica Status Solidi B: Basic Solid State Physics
Publisher:Wiley-VCH Verlag
ISSN:0370-1972
ISSN (Online):1521-3951
Published Online:19 January 2009

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