The multiexciton properties of extrinsic centers from AlGaAs layers on Ge and Si substrates are addressed. The two photon cascade is found both in steady state and in time resolved experiments. Polarization analysis of the ...
Sarti, F.; Muñoz Matutano, Guillermo; Bietti, S.; Vinattieri, A.; Sanguinetti, S.; Gurioli, M.(American Institute of Physics (AIP), 2013-09-28)
We show that the epitaxial growth of height-controlled GaAs quantum dots, leading to the reduction of the inhomogeneous emission bandwidth, produces individual nanostructures of peculiar morphology. Besides the height ...