Pure dephasing induced by exciton-phonon interactions in GaAs quantum dots
Hailin Wang, Xudong Fan, T. Takagahara +1 more
Summary form only given.We report studies of exciton dephasing in quantum dot (QD)-like islands in narrow GaAs quantum wells (QWs). Using three pulse transient four-wave mixing (FWM), we compare dephasing rates directly with population decay rates. This comparison reveals a pure dephasing process that dominates excitonic dephasing at elevated temperatures but does not involve exciton population relaxation.
Conference on Lasers and Electro-Optics•Nov 27, 2002•0 citations