Optical gain and stimulated emission in silicon nanocrystals (Contributo in atti di convegno)

Type
Label
  • Optical gain and stimulated emission in silicon nanocrystals (Contributo in atti di convegno) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • Dal Negro, L; Cazzanelli, M; Gaburro, Z; Bettotti, P; Pavesi, L; Pacifici, D:, Franzò, G; Priolo, F; Iacona, F (2003)
    Optical gain and stimulated emission in silicon nanocrystals
    in Materials Research Society (MRS) Fall Meeting, Symposium G: "Spatially Resolved Characterization of Local Phenomena in Materials and Nanostructures", Boston (USA), 2-6 December 2002
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Dal Negro, L; Cazzanelli, M; Gaburro, Z; Bettotti, P; Pavesi, L; Pacifici, D:, Franzò, G; Priolo, F; Iacona, F (literal)
Pagina inizio
  • 233 (literal)
Pagina fine
  • 238 (literal)
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  • 738 (literal)
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  • 738 (literal)
Rivista
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  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • INFM-Dipartimento di Fisica, via Sommarie 14, Università di Trento, I-38050 Povo (Trento), Italy INFM-Dipartimento di Fisica, Università di Catania, I-95129 Catania CNR-IMM, Catania, Italy (literal)
Titolo
  • Optical gain and stimulated emission in silicon nanocrystals (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 1-55899-675-3 (literal)
Abstract
  • Time-resolved luminescence measurements on silicon nanocrystal waveguides have revealed a fast recombination dynamics, related to population inversion which leads to net optical gain. The waveguide samples were obtained by thermal annealing of plasma enhanced chemical vapour deposited thin layers of silicon rich oxide Variable stripe length measurements performed on the fast emission signal have shown an exponential growth of the amplified spontaneous emission, with net gain values of about 10 cm(-1). Both the fast component intensity and its temporal width revealed threshold behaviour as a function of the incident pump. intensity. A modelling of the decay dynamics is suggested within an effective four level rate equation treatment including the delicate interplay among stimulated emission and Auger recombinations. (literal)
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