physica status solidi (b)

Cover image for Vol. 254 Issue 6

Editor: Stefan Hildebrandt (Editor-in-Chief), Sabine Bahrs (Deputy Editor)

Online ISSN: 1521-3951

Associated Title(s): physica status solidi (a), physica status solidi (c), physica status solidi (RRL) - Rapid Research Letters

Homogeneous linewidth of quantum well excitonsfrom resonance fluorescence spectra

240_01/2003Editor's Choice of this issue is the article by D. Schwedt et al. [1] on high resolution measurements of resonance fluorescence spectra from GaAs quantum wells. In the cover picture, the authors point out the connection between the experimental data and the model of disordered excitons. The lower left part shows a series of polarized photoluminescence spectra, fitted with very good agreement by a model of statistically distributed three-level-systems. The upper right part images the excitation mechanism. Only those excitons of an inhomogeneous distribution (indicated by the blue line) contribute to the resonance fluorescence (red line) which overlap spectrally with the monochromatic laser. It could be verified experimentally that the resonance fluorescence exhibits two parts: delta-like Rayleigh scattering and Lorentzian luminescence.Daniel Schwedt is working in the DFG research group 'Quantum Optics in Semiconductor Nanostructures' and concentrates on quantum optical experiments on III–V semiconductor quantum well structures.

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