Mode-locking transitions in nanostructured weakly disordered lasers (Articolo in rivista)

Type
Label
  • Mode-locking transitions in nanostructured weakly disordered lasers (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.76.064202 (literal)
Alternative label
  • L. Angelani (1); C. Conti (2,3); L. Prignano (4); G. Ruocco (3,4); F. Zamponi (5) (2007)
    Mode-locking transitions in nanostructured weakly disordered lasers
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Angelani (1); C. Conti (2,3); L. Prignano (4); G. Ruocco (3,4); F. Zamponi (5) (literal)
Pagina inizio
  • 064202 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://journals.aps.org/prb/abstract/10.1103/PhysRevB.76.064202 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 76 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Research Center SMC INFM-CNR, Università di Roma \"La Sapienza,\" I-00185 Roma, Italy (2) Centro Studi e Ricerche \"Enrico Fermi,\" Via Panisperna 89/A, I-00184 Roma, Italy (3) Research Center Soft INFM-CNR, Università di Roma \"La Sapienza,\" I-00185 Roma, Italy (4) Dipartimento di Fisica, Università di Roma \"La Sapienza,\" I-00185 Roma, Italy (5) Service de Physique Théorique, CEA Saclay, 91191 Gif sur Yvette Cedex, France (literal)
Titolo
  • Mode-locking transitions in nanostructured weakly disordered lasers (literal)
Abstract
  • We report on a statistical approach to mode-locking transitions of nanostructured laser cavities characterized by an enhanced density of states. We show that the equations for the interacting modes can be mapped onto a statistical model exhibiting a first-order thermodynamic transition, with the average mode energy playing the role of inverse temperature. The transition corresponds to a phase locking of modes. Extended modes lead to a mean-field-like model, while in the presence of localized modes, as due to a small disorder, the model has short-range interactions. We show that simple scaling arguments lead to observable differences between transitions involving extended modes and those involving localized modes. We link the thermodynamic transition to a topological singularity of the phase space, as previously reported for similar models. Finally, we solve the dynamics of the model, predicting a jump in the relaxation time of the coherence functions at the transition. (literal)
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