Kim, A.M.T.A.M.T.KimHunsche, S.S.HunscheDekorsy, T.T.DekorsyKurz, H.H.KurzKöhler, KlausKlausKöhler2022-03-032022-03-031996https://publica.fraunhofer.de/handle/publica/18921410.1063/1.116367The thermalization of optically excited cold holes in a GaAs quantum well is investigated by femtosecond two-color pump-probe measurements. Clear evidence is found for scattering from heavy-holes into the lowest light-hole band due to LO-phonon absorption. We obtain firm data on scattering times which depend strongly on lattice temperature. They vary from 230 fs at room temperature to 900 fs at T equal 05 K. The experimental data are well reproduced by numerical calculation.enheterostructureHeterostrukturIII-V HalbleiterIII-V semiconductorsquantum wellstime resolved measurementzeitaufgelöste Messung621667journal article