Nonradiative relaxation rate modification by chlorine codoping of rare earth activated PZG fluoride glasses

Brigitte Boulard; Stephan Guy; Yoann Jestin; Ion Vasilief; Claire Duverger; Alessandro Chiasera; Maurizio Ferrari

doi:10.1117/12.549923

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18 August 2004 Nonradiative relaxation rate modification by chlorine codoping of rare earth activated PZG fluoride glasses

Brigitte Boulard, Stephan Guy, Yoann Jestin, Ion Vasilief, Claire Duverger, Alessandro Chiasera, Maurizio Ferrari

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Proceedings Volume 5451, Integrated Optics and Photonic Integrated Circuits; (2004) https://doi.org/10.1117/12.549923
Event: Photonics Europe, 2004, Strasbourg, France

Abstract

The luminescence of rare earth ions Re³⁺ = Pr³⁺, Er³⁺, and Tm³ in PZG fluoride glass (36PbF₂-24ZnF₂-35GaF₃-5YF₃-2AlF₃ in mol%) doped with ReCl₃ was investigated. This study was initiated in the perspective of realizing by vapor phase deposition (PVD) rare earth activated fluoride glass channel waveguides acting as integrated optical amplifiers, ReCl₃ being more volatile than the fluoride counterpart. The results were compared to the spectroscopic properties of ReF₃-doped PZG glasses. For phonon-sensitive radiative transitions, the lifetime was prolonged at low ReCl₃ concentration because of phonon energy and/or electron coupling are reduced. For Pr³⁺, the doping with PrCl₃ increases the lifetime by 50% in respect to PrF₃ doping. These results suggest that the chlorine ions remain in the coordination sphere of the rare earth ions in the ReCl₃-doped glass after melting. The luminescence decay of Er³⁺: ⁴I_13/2 level in ErCl₃-doped channel waveguides is also discussed.

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Brigitte Boulard, Stephan Guy, Yoann Jestin, Ion Vasilief, Claire Duverger, Alessandro Chiasera, and Maurizio Ferrari "Nonradiative relaxation rate modification by chlorine codoping of rare earth activated PZG fluoride glasses", Proc. SPIE 5451, Integrated Optics and Photonic Integrated Circuits, (18 August 2004); https://doi.org/10.1117/12.549923

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