Regensburg 2000 – wissenschaftliches Programm

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HL: Halbleiterphysik

HL 12: Poster I: Quanten Hall Effekt (1-9), II-VI Halbleiter (10-17), Epitaxie (18-23), Quantenpunkte und -dr
ähte (24-50), Photonik (51-59), Metall-Isolator Übergang (60-64), Si/Ge (65-67), Elektronentheorie (68-69), Amorphe Halbleiter, Ionen-Implantation

HL 12.26: Poster

Montag, 27. März 2000, 14:00–19:00, A

Microscopic Dynamics of Quantum Dot Lasers — •Vasilos Stavrou, Dietmar Preisser, and Ortwin Hess — Theoretical Quantum Electronics, Institute of Technical Physics, DLR, Pfaffenwaldring 38-40, D-70569 Stuttgart

The dynamics of quantum dot (QD) semiconductor lasers is

analysed by numerical simulation on the basis of microscopic

Maxwell-Bloch equations for single and multiple coupled QDs.

The semiconductor QDs consindered as active material in the

QD-laser consist of InP embedded in the background material AlAs.

We discuss, in particular, the interactions of the optical field

with the carriers as well as the interplay of carrier-carrier

and the carrier-optical phonon scattering with the

dynamics of the optical field propagating within the laser cavity.

Moreover, the dependence of the dynamic optical properties of

QD lasers on the shape of the carrier confined potential is