Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloFeatures of Vectorial Modes in Phase-Coupled VCSEL's Arrays: Experiments and Theory
Anno di pubblicazione2003
Formato-
Autore/iP. Debernardi, G. P. Bava, F. Monti di Sopra, M. B. Willemsen
Affiliazioni autori1 CNR, 2 Politecnico di Torino, 3 Avalon Photonics Svizzera, 4 Leiden University Olanda
Autori CNR e affiliazioni
  • PIERLUIGI DEBERNARDI
Lingua/e-
AbstractWe present a detailed study of oxide-confined, vertical-cavity surface-emitting lasers (VCSELs) where the reflectivity of the top mirror has been patterned by means of a metal grid, which at the same time acts also as an electrode. Owing to their features, these kind of devices are commonly referred to as phase-coupled VCSEL arrays. The analysis is based on a joint experimental and theoretical effort: the former is devoted to a complete characterization of the emission properties, while the latter is based on a comprehensive fully vectorial model for the structure eigenmodes with the details of their complex structure. The detected characteristics make them quite attractive for various applications and the comparison of their modal properties with the model is proved to be essential for a deep understanding of these lasers. In particular, we observed and explain, for the first time, a characteristic behavior of the lasing array, which displays spatially inhomogeneous polarization characteristics with symmetry properties with respect to the array diagonals. The good matching between theory and experiment opens new perspectives for optimized device, where the typical four lobe far-field emission is converted in a narrow central lobe: two different proposals will be discussed.
Lingua abstract-
Altro abstract-
Lingua altro abstract-
Pagine da109
Pagine a119
Pagine totali-
RivistaIEEE journal of quantum electronics
Attiva dal 1965
Editore: Institute of Electrical and Electronics Engineers, - [New York
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 0018-9197
Titolo chiave: IEEE journal of quantum electronics
Titolo proprio: IEEE journal of quantum electronics.
Titolo abbreviato: IEEE j. quantum electron.
Titoli alternativi:
  • Journal of quantum electronics
  • I.E.E.E. journal of quantum electronics
Numero volume della rivista38
Fascicolo della rivista-
DOI-
Verificato da referee-
Stato della pubblicazione-
Indicizzazione (in banche dati controllate)-
Parole chiaveVCSELs, Phase-coupled arrays, Polarization patters, Supermodes, High-power VCSELs
Link (URL, URI)-
Titolo parallelo-
Data di accettazione-
Note/Altre informazioni-
Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
Moduli CNR-
Progetti Europei-
Allegati

    Dati storici
    I dati storici non sono modificabili, sono stati ereditati da altri sistemi (es. Gestione Istituti, PUMA, ...) e hanno solo valore storico.
    Area disciplinareInformation Technology & Communications Systems
    Rivista ISIIEEE JOURNAL OF QUANTUM ELECTRONICS [42152J0]
    Descrizione sintetica del prodottoWe present a detailed study of oxide-confined, vertical-cavity surface-emitting lasers (VCSELs) where the reflectivity of the top mirror has been patterned by means of a metal grid, which at the same time acts also as an electrode. Owing to their features, these kind of devices are commonly referred to as phase-coupled VCSEL arrays. The analysis is based on a joint experimental and theoretical effort: the former is devoted to a complete characterization of the emission properties, while the latter is based on a comprehensive fully vectorial model for the structure eigenmodes with the details of their complex structure. The detected characteristics make them quite attractive for various applications and the comparison of their modal properties with the model is proved to be essential for a deep understanding of these lasers. In particular, we observed and explain, for the first time, a characteristic behavior of the lasing array, which displays spatially inhomogeneous polarization characteristics with symmetry properties with respect to the array diagonals. The good matching between theory and experiment opens new perspectives for optimized device, where the typical four lobe far-field emission is converted in a narrow central lobe: two different proposals will be discussed.