Transparent Er<sup>3+</sup>-activated lead fluorogermanate glass ceramics

Raffaella Rolli; Luciano A. Bueno; Sidney J. L. Ribeiro; Younes Messaddeq; Marco Bettinelli; Adolfo Speghini; Maurizio Ferrari; Cristina Armellini; Maurizio Montagna; Giancarlo C. Righini; Stefano Pelli

doi:10.1117/12.525851

19 November 2003 Transparent Er³⁺-activated lead fluorogermanate glass ceramics

Raffaella Rolli, Luciano A. Bueno, Sidney J. L. Ribeiro, Younes Messaddeq, Marco Bettinelli, Adolfo Speghini, Maurizio Ferrari, Cristina Armellini, Maurizio Montagna, Giancarlo C. Righini, Stefano Pelli

Author Affiliations +

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.525851
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

Transparent glass ceramics containing β-PbF₂:Er³⁺ nanocrystals were obtained through appropriate thermal treatments of a glass of molar composition 60PbGeO₃-10PbF₂-30CdF₂ doped with 0.5 mol% Er³⁺. Their optical properties, as well as upconversion processes among erbium ions in the glass and glass ceramic matrix were studied. From absorption spectra, Judd-Ofelt parameters and radiative transition rates for several excited levels were calculated. Emission spectra in the visible and NIR regions were collected, and stimulated emission cross sections were obtained by McCumber theory for the ⁴I_13/2→⁴I_15/2 transition at 1.5 μm. Red and green upconversion emissions were measured in glass and glass ceramics upon excitation at 980 nm; lifetimes were measured in order to assess the upconversion mechanisms.

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Raffaella Rolli, Luciano A. Bueno, Sidney J. L. Ribeiro, Younes Messaddeq, Marco Bettinelli, Adolfo Speghini, Maurizio Ferrari, Cristina Armellini, Maurizio Montagna, Giancarlo C. Righini, and Stefano Pelli "Transparent Er³⁺-activated lead fluorogermanate glass ceramics", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.525851

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