Wagner, Hans Peter1; Langbein, Wolfgang Werner1; Hvam, Jørn Märcher2
1 Department of Micro- and Nanotechnology, Technical University of Denmark2 Department of Photonics Engineering, Technical University of Denmark
Biexcitonic complexes in a ZnSe single quantum well are investigated by spectrally resolved four-wave mixing (FWM). The formation of heavy-heavy-hole XXh and of mixed heavy-light-hole XXm biexcitons showing binding energies of Delta(h) = 4.8 meV and Delta(m)= 2.8 meV is identified by polarization selection rules. The coherent dynamics of the FWM response and the observed FWM intensity ratio between the XXh and XXm biexciton-induced nonlinear signals are in agreement with the solution of an extended optical Bloch equation.
Physical Review B Condensed Matter, 1999, Vol 59, Issue 7, p. 4584-4587