Compositional effect on the upconversion of Ta2O5 and Nb2O5 based tellurite glasses

John A. Capobianco; Fiorenzo Vetrone; John-Christopher Boyer; Adolfo Speghini; Marco Bettinelli

doi:10.1117/12.524921

19 November 2003 Compositional effect on the upconversion of Ta₂O₅ and Nb₂O₅ based tellurite glasses

John A. Capobianco, Fiorenzo Vetrone, John-Christopher Boyer, Adolfo Speghini, Marco Bettinelli

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.524921
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

We study the upconversion properties of Ta₂O₅ and Nb₂O₅ based TeO₂ glasses doped with 0.5 mol% Er₂O₃ after excitation into the ⁴I_1½ level using 980 nm radiation. Green and red emission is observed originating from the (²H_1½, ⁴S_3/2) and ⁴F_9/2 states, respectively. Excited state absorption and energy trasnfer are discussed as possible mechanisms for the upconversion.

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John A. Capobianco, Fiorenzo Vetrone, John-Christopher Boyer, Adolfo Speghini, and Marco Bettinelli "Compositional effect on the upconversion of Ta₂O₅ and Nb₂O₅ based tellurite glasses", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.524921

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