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Exciton-LO-phonon dynamics in InAs/GaAs quantum dots: Effects of zone-edge phonon damping

Pawel Machnikowski·Lucjan Jacak
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Abstract

The dynamics of an exciton-LO-phonon system after an ultrafast optical excitation in an InAs/GaAs quantum dot is studied theoretically. Influence of anharmonic phonon damping and its interplay with the phonon dispersion is analyzed. The signatures of the zone-edge decay process in the absorption spectrum and time evolution are highlighted, providing a possible way of experimental investigation on phonon anharmonicity effects.

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Pawel Machnikowski, Lucjan Jacak. 2005-07-04. Exciton-LO-phonon dynamics in InAs/GaAs quantum dots: Effects of zone-edge phonon damping. https://doi.org/10.1103/physrevb.71.115309

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