Dispersion and damping of multi-quantum well polaritons from resonant Brillouin scattering by folded acoustic modes
B.Jusserand, A. Fainstein, R. Ferreira, S. Majrab, and A. Lemaitre
TL;DR
This paper investigates the behavior of multi-quantum well polaritons through high-resolution Brillouin scattering, revealing detailed insights into their dispersion, damping, and dynamics in confined GaAs/AlAs systems.
Contribution
It provides the first detailed experimental analysis of polariton dispersion and damping in confined multi-quantum wells using resonant Brillouin scattering.
Findings
Line shifts and widths vary significantly across resonance
Quantitative agreement with polariton dispersion models
New insights into polariton dynamics in confined systems
Abstract
We report on confined exciton resonances of acoustic and folded acoustic phonon light scattering in a GaAs/AlAs multi-quantum-well. Significant variations of the line shifts and widths are observed across the resonance and quantitatively reproduced in terms of the polariton dispersion. This high resolution Brillouin study brings new unexpectedly detailed informations on the polariton dynamics in confined systems.
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