Photonic properties and applications of glass micro- and nanospheres (Articolo in rivista)

Type
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  • Photonic properties and applications of glass micro- and nanospheres (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/pssa.200881335 (literal)
Alternative label
  • G. C. Righini, F. Cosi, G. Nunzi Conti, S. Pelli, S. Soria, E. Moser, Y. Jestin, M. Ferrari, P. Féron, A. Chiasera, A. Chiappini, and C. Armellini (2009)
    Photonic properties and applications of glass micro- and nanospheres
    in Physica status solidi. A, Applications and materials science (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G. C. Righini, F. Cosi, G. Nunzi Conti, S. Pelli, S. Soria, E. Moser, Y. Jestin, M. Ferrari, P. Féron, A. Chiasera, A. Chiappini, and C. Armellini (literal)
Pagina inizio
  • 898 (literal)
Pagina fine
  • 903 (literal)
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  • 206 (literal)
Rivista
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  • DOI 10.1002/pssa.200881335 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Pubblicazione su rivista ISI-JCR (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • G. C. Righini is at CNR-IFAC, MDF Lab., Nello Carrara Institute of Applied Physics, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy F. Cosi and S. Pelli are at CNR-IFAC, MDF Lab., Nello Carrara Institute of Applied Physics, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy and CNR-DMD, Department of Materials and Devices, via dei Taurini 19, 00185 Roma, Italy G. Nunzi Conti and S. Soria are at CNR-IFAC, MDF Lab., Nello Carrara Institute of Applied Physics, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy and Centro Studi e Ricerche “E. Fermi”, Piazza del Viminale 2, 00184 Roma, Italy E. Moser is at Dipartimento di Fisica, Università di Trento & CSMFO Lab., via Sommarive 14, 38050 Povo-Trento, Italy Y. Jestin, M. Ferrari, A. Chiasera, A. Chiappini, and C. Armellini are at CNR-IFN, CSMFO Lab., Via alla Cascata 56/c, 38050 Povo-Trento, Italy P. Féron is at Laboratoire d’Optronique, CNRS-UMR 6082-Foton, ENSSAT, 6 rue de Kérampont, 22300 Lannion, France (literal)
Titolo
  • Photonic properties and applications of glass micro- and nanospheres (literal)
Abstract
  • Fabrication, morphological and spectroscopic assessment of micro- and nano-spheres are reported. Spheres with size ranging from few hundreds of nm to few hundreds of m have been prepared by different methods, i.e. sol-gel, melting and core-shell techniques. Pure and rare-earth-doped spheres find their major applications as microsensors and microlasers, respectively. We refer here to Erbium-activated systems only: (i) coated micro spheres where the silica core, obtained by telecom fiber melting, is coated with an Er3+-70SiO2-30HfO2 film; (ii) Er3+-activated microspheres obtained from silicate-modified glasses and phosphate glasses using a plasma torch; (iii) sol-gel Er3+-doped silica micro- and nano-spheres. The whispering gallery mode spectra were analysed as a function of sphere diameter, thickness of coating (if any) and Erbium content. Photoluminescence spectra of different systems gave interesting indications on the potential of some activated microspheres for lasing applications. For instance, sol-gel Er3+-activated core-shell-like structures exhibited a lifetime of 12.8 ms, leading to a quantum efficiency (QE) of 71%. Even higher QE (76%) was estimated in sol-gel Er3+-silica spheres. (literal)
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