Related Experiment Video
Updated: Aug 5, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
Published on: December 3, 2013
Strongly driven exciton resonances in quantum wells: light-induced dressing versus coulomb scattering
1Institute of Theoretical Physics, EPFL, CH-1015 Lausanne, Switzerland.
Abstract:
The nonequilibrium dynamics of a two-dimensional electron-hole gas is studied in the regime of strong and resonant pumping of the exciton resonance. The Coulomb collision rates are consistently determined by taking into account the light-induced coherence of the two-band system that leads to a dressing of the carrier spectral functions. The light dressing dramatically reduces the Coulomb scattering efficiency. Results are presented for Rabi oscillations in the time domain and dynamical Stark splitting in the pump-probe absorption spectra.
Related Concept Videos
The de Broglie Wavelength
¹H NMR: Interpreting Distorted and Overlapping Signals
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...
Molecular Spectroscopy: Absorption and Emission
UV–Vis Spectroscopy: Molecular Electronic Transitions
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Atomic Spectroscopy: Absorption, Emission, and Fluorescence

