Ma. Mycek et al., ULTRAFAST SPECTROSCOPY OF GAAS UNDER A MAGNETIC-FIELD - COULOMB CORRELATED MAGNETOEXCITONS IN THE 3D TO 1D TRANSITION, Journal of physics and chemistry of solids, 56(11), 1995, pp. 1543-1547
Using transient four-wave mixing spectroscopy, we study the ultrafast
nonlinear optical response of magnetoexcitons in GaAs at 1.6 K. By spe
ctrally and temporally resolving the coherent emission, we measure the
magnetic field dependence of Coulomb interactions between magnetoexci
tons. Contrary to experiments performed in quantum wells, these intera
ctions persist for field strengths up to 10 T.