[EN] New optical fiber based spectroscopic tools open the possibility to develop more robust and efficient characterization experiments. Spectral filtering and light reflection have been used to produce compact and versatile ...
[EN] The Purcell effect dependence on the excitation power is studied in photonic crystal microcavity lasers embedding InAs/InP quantum wires. In the case of non-lasing modes, the Purcell effect has low dependence on the ...
[EN] We have studied the optical properties of InAs site-controlled quantum dots (SCQDs) grown on pre-patterned GaAs substrates. Since InAs nucleates preferentially on the lithography motifs, the location of the resulting ...
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 ...
[EN] The structural and morphological features of bimodal-sized InAs/(In) GaAs quantum dots with density in the low 10(9) cm(-2) range were analyzed with transmission electron microscopy and atomic force microscopy and ...
[EN] Photoluminescence and time resolved photoluminescence from single metamorphic
InAs/GaAs quantum dots (QDs) emitting at 1.3 micrometers have been measured by means of a novel
fibre-based characterization set-up. We ...