title: Micro-photoluminescence of GaAs/AlGaAs triple concentric quantum rings.
abstract: A systematic optical study, including micro, ensemble and time resolved photoluminescence of GaAs/AlGaAs triple concentric quantum rings, self-assembled via droplet epitaxy, is presented. Clear emission from localized states belonging to the ring structures is reported. The triple rings show a fast decay dynamics, around 40 ps, which is expected to be useful for ultrafast optical switching applications.
authors: L,E,N,S, and Dipartimento di Fisica, Universitá di Firenze, Via Sansone 1, I-50019, Sesto Fiorentino, Italy. marco.abbarchi@lpa.ens.fr.
authors: Marco
authors: M
authors: Abbarchi
authors: Lucia
authors: L
authors: Cavigli
authors: Claudio
authors: C
authors: Somaschini
authors: Sergio
authors: S
authors: Bietti
authors: Massimo
authors: M
authors: Gurioli
authors: Anna
authors: A
authors: Vinattieri
authors: Stefano
authors: S
authors: Sanguinetti