NONLINEAR-OPTICAL PROPERTIES OF SEMICONDUCTOR QUANTUM WIRES

Nonlinear optical transmission at discrete frequencies (bleaching band s) has been observed in CdSe and GaAs quantum wires crystallized in ch rysotile asbestos nanotubes with average diameter approximate to 6 nm and in nanocrystals of CdS (crystallized in the transparent molecular filter-mica with empty channels of designed diameter). The induced dec rease of aborption in quantum wires has been explained by filling of t he size-quantized energy bands with nonequilibrium carriers (saturatio n effect) and by the phase space filling of excitons. (C) 1998 Academi c Press Limited.