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Proceedings Paper

Soda-zinc-aluminosilicate glasses doped with Tb3+, Ce3+ and Sm3+ for frequency conversion and white light generation
Author(s): Simone Berneschi; Massimo Brenci; Giancarlo C. Righini; Marco Bettinelli; Adolfo Speghini; Ulises Caldiño; Enrique Álvarez; Alessandro Chiasera; Sreeramulu Valligatla; Maurizio Ferrari
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Paper Abstract

Sodium-zinc-aluminosilicate (NaZAS) glasses doped with single or multiple rare earth ions (Ce3+, Tb3+, Sm3+) were synthesized, and their characteristics investigated by m-line spectroscopy, absorption and luminescence spectroscopy, and micro-Raman spectroscopy. Blue-white light, with x = 0.24 and y = 0.24 CIE chromaticity coordinates, was obtained for the Tb3+ singly-doped glass excited at 351 nm. In NaZAS glasses co-doped with Ce3+ and Tb3+ it was possible to observe a non-radiative energy transfer from Ce3+ to Tb3+ ions upon 320 nm excitation; the Ce3+→Tb3+ energy transfer microscopic parameter and efficiency were obtained from the analysis of the cerium emission decay curve. Different concentrations of Ce3+ and Tb3+ ions in the same glass host give rise to blue and blue-green emissions, with different CIE coordinates. Optical waveguides were also produced in the samples by means of Ag+-Na+ ion exchange process, and characterized.

Paper Details

Date Published: 26 October 2011
PDF: 10 pages
Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 801159 (26 October 2011); doi: 10.1117/12.903223
Show Author Affiliations
Simone Berneschi, Isituto di Fisica Applicata Nello Carrara, CNR (Italy)
Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi (Italy)
Massimo Brenci, Isituto di Fisica Applicata Nello Carrara, CNR (Italy)
Giancarlo C. Righini, Isituto di Fisica Applicata Nello Carrara, CNR (Italy)
Marco Bettinelli, Univ. degli Studi di Verona (Italy)
Adolfo Speghini, Univ. degli Studi di Verona (Italy)
Ulises Caldiño, Univ. Autónoma Metropolitana-Iztapalapa (Mexico)
Enrique Álvarez, Univ. de Sonora (Mexico)
Alessandro Chiasera, Istituto di Fotonica e Nanotecnologie, CNR (Italy)
Sreeramulu Valligatla, Istituto di Fotonica e Nanotecnologie, CNR (Italy)
Univ. degli Studi di Trento (Italy)
Univ. of Hyderabad (India)
Maurizio Ferrari, Istituto di Fotonica e Nanotecnologie, CNR (Italy)


Published in SPIE Proceedings Vol. 8011:
22nd Congress of the International Commission for Optics: Light for the Development of the World

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