Enhanced performances of quantum dot lasers operating at 1.3 mu m (Articolo in rivista)

Type
Label
  • Enhanced performances of quantum dot lasers operating at 1.3 mu m (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1109/JSTQE.2008.916182 (literal)
Alternative label
  • Salhi, A; Raino, G; Fortunato, L; Tasco, V; Visimberga, G; Martiradonna, L; Todaro, MT; De Giorgi, M; Cingolani, R; Trampert, A; De Vittorio, M; Passaseo, A (2008)
    Enhanced performances of quantum dot lasers operating at 1.3 mu m
    in IEEE journal of selected topics in quantum electronics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Salhi, A; Raino, G; Fortunato, L; Tasco, V; Visimberga, G; Martiradonna, L; Todaro, MT; De Giorgi, M; Cingolani, R; Trampert, A; De Vittorio, M; Passaseo, A (literal)
Pagina inizio
  • 1188 (literal)
Pagina fine
  • 1196 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 14 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Salhi, Abdelmajid; Raino, Gabriele; Fortunato, Laura; Tasco, Vittorianna; Visimberga, Giuseppe; Martiradonna, Luigi; Todaro, Maria Teresa; De Giorgi, Milena; Cingolani, Roberto; De Vittorio, Massimo; Passaseo, Adriana] Univ Salento, CNR, INFM, Natl Nanotechnol Lab, I-73100 Lecce, Italy; [Cingolani, Roberto] Italian Inst Technol, I-16163 Genoa, Italy; [Trampert, Achim] Paul Drude Inst Solid State Elect, D-10117 Berlin, Germany; [De Vittorio, Massimo] Univ Salento, ISUFI, I-73100 Lecce, Italy (literal)
Titolo
  • Enhanced performances of quantum dot lasers operating at 1.3 mu m (literal)
Abstract
  • Due to their delta-like density of states, quantum dots (QDs) were expected to improve laser device performances with respect to quantum wells (QWs). Nevertheless, some important drawbacks limit this technology. For instance, QD laser still suffers from a low value of the modal gain, due to the low areal density of QDs, and inhomogeneous broadening, especially when multistacked layers are used. In this paper, we demonstrate that a linear increase of the QD modal gain with the QD layers number, as typically achieved in multi-QW lasers, is possible by a careful control of the Stranski-Krastanov QDs growth and QDs stacking optimization. A low-transparency current density of 10 A/cm(2) per QD layer and a modal gain of 6 cm(-1) per QD layer Were achieved from laser structures containing up to seven QD layers. We demonstrate 10-Gb/s direct modulation (until a temperature of 50 degrees C and high T-0 (110 K) from a single-mode device containing six QD layers. (literal)
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