142 citations · 494 across the 8 of their papers we have counts for
8 papers
Self-phase modulation of a single-cycle terahertz pulse by nonlinear free-carrier response in a semiconductor
Dmitry Turchinovich, Jørn M. Hvam, Matthias C. Hoffmann
We demonstrate the self-phase modulation (SPM) of a single-cycle THz pulse in a semiconductor, using bulk n-GaAs as a model system. The SPM arises from the heating of free electron…
Spontaneous emission from large quantum dots in nanostructures: exciton-photon interaction beyond the dipole approximation
Søren Stobbe, Philip T. Kristensen, Jakob E. Mortensen +3
We derive a rigorous theory of the interaction between photons and spatially extended excitons confined in quantum dots in inhomogeneous photonic materials. We show that, beyond th…
Build up of off-diagonal long-range order in microcavity exciton-polaritons across the parametric threshold
R. Spano, J. Cuadra, C. Lingg +6
We report an experimental study of the spontaneous spatial and temporal coherence of polariton condensates generated in the optical parametric oscillator configuration, below and a…
Large quantum dots with small oscillator strength
S. Stobbe, T. W. Schlereth, S. Höfling +3
We have measured the oscillator strength and quantum efficiency of excitons confined in large InGaAs quantum dots by recording the spontaneous emission decay rate while systematica…
Exciton spin-flip rate in quantum dots determined by a modified local density of optical states
Jeppe Johansen, Brian Julsgaard, Søren Stobbe +2
The spin-flip rate that couples dark and bright excitons in self-assembled quantum dots is obtained from time-resolved spontaneous emission measurements in a modified local density…
Frequency dependence of the radiative decay rate of excitons in self-assembled quantum dots: experiment and theory
Søren Stobbe, Jeppe Johansen, Philip Trøst Kristensen +2
We analyze time-resolved spontaneous emission from excitons confined in self-assembled quantum dots placed at various distances to a semiconductor-air interface. Th…