Photoluminescence of Erbium-Doped Silicate Sol-Gel Planar Waveguides (Articolo in rivista)

Type
Label
  • Photoluminescence of Erbium-Doped Silicate Sol-Gel Planar Waveguides (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1023/B:JSST.0000048010.74400.f0 (literal)
Alternative label
  • R.M. ALMEIDA; A.C. MARQUES;R. CABEC; L. ZAMPEDRI; A. CHIASERA; M. FERRARI (2004)
    Photoluminescence of Erbium-Doped Silicate Sol-Gel Planar Waveguides
    in Journal of sol-gel science and technology
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • R.M. ALMEIDA; A.C. MARQUES;R. CABEC; L. ZAMPEDRI; A. CHIASERA; M. FERRARI (literal)
Pagina inizio
  • 317 (literal)
Pagina fine
  • 322 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 31 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • R.M. ALMEIDA; A.C. MARQUES; R. CABEC¸A Depart. Eng. de Materiais, Instituto Superior T´ecnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal L. ZAMPEDRI CNR-IFN, Institute of Photonics and Nanotechnologies, CSMFO Group, via Sommarive 14, I-38050 Povo-Trento, Italy A. CHIASERA Dipartimento di Fisica and INFM, CSMFO Group, Universit`a di Trento, via Sommarive 14, I-38050 Povo, Trento, Italy M. FERRARI CNR-IFN, Institute of Photonics and Nanotechnologies, CSMFO Group, via Sommarive 14, I-38050 Povo-Trento, Italy (literal)
Titolo
  • Photoluminescence of Erbium-Doped Silicate Sol-Gel Planar Waveguides (literal)
Abstract
  • Er3+-doped silica-titania planar waveguides, prepared by sol-gel processing, have a tendency to exhibit a reversible photoluminescence (PL) quenching phenomenon at 1.5 ?m, when they are not fully densified. In the present paper, the presence of porosity and OH species associated with a simultaneous decrease in the Er3+ PL intensity and lifetime are followed in detail by infrared and m-line spectroscopies. Different chemical compositions and EtOH/precursor ratios, as well as optimized heat treatments, have been used in order to ensure the preparation of fully densified waveguides with enhanced spectroscopic properties. Both the Er3+ PL spectra and the fluorescence lifetimes at 1.5 ?m have been determined in the SiO2-TiO2-AlO1.5-ErO1.5, SiO2-HfO2-AlO1.5-ErO1.5 and SiO2- HfO2-TiO2-AlO1.5-ErO1.5 systems, as a function of the matrix composition and Er3+ ion concentration. These waveguides, densified at 900oC, appear to offer the best performance in terms of stability and strength of the PL signal. (literal)
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