Dresden 2006 – wissenschaftliches Programm

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HL: Halbleiterphysik

HL 40: Quantum dots and wires: Optical properties III

HL 40.8: Vortrag

Donnerstag, 30. März 2006, 12:45–13:00, POT 151

Theory of Sonoluminescence of Semiconductor Quantum Dots — •Frank Milde, Kwang Jun Ahn, Valentin Flunkert, and Andreas Knorr — Institut für Theoretische Physik, Nichtlineare Optik und Quantenelektronik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany

The dynamics of resonance fluorescence spectra of acoustically excited intersubband electronic transitions in semiconductor quantum dot is discussed. Since the frequency of the used acoustic waves is well off-resonant to all electronic transitions higher-order harmonics (many phonon absorption) dominate the nonlinear excitation regime.

The derivation of the equations of motion for the photon number of the quantized field is performed in the density matrix formalism. Numerical simulations predict a conversion of incident acoustic into electromagnetic energy over a broad spectral Terahertz range.