Multiparticle interactions and stimulated emission in chemically synthesized quantum dots

• DOI: 10.1063/1.1463704
• Publication Date: 2002-07-26T13:27:17Z
• Authors: A. A. Mikhailovsky; A. V. Malko; J. A. Hollingsworth; M. G. Bawendi; V. I. Klimov
• Keywords: Auger effect; Biexciton; Absorption edge

We study the effect of multiparticle interactions on optical gain and stimulated emission in close-packed solids chemically synthesized CdSe nanocrystals (nanocrystal quantum dots). An analysis pump-dependent nonlinear absorption signals indicates that band-edge is due to states with a dominant contribution from doubly excited (quantum-confined biexcitons). observe dynamics are competition between ultrafast hole surface trapping Auger decay. analyze intrinsic recombination lifetimes pump intensity thresholds.