Luminescence and Energy Transfer in Fluoroindate Glasses Doped with Rare-Earth

M Kochanowicz,A Baranowska,J Zmojda,D Dorosz,W A Pisarski,M Kuwik,J Pisarska,J Dorosz,M Sitarz,A Nezhdanov,M Lesniak,G Righini,P Miluski,M Ferrari,L Mochalov

doi:10.1109/icton.2019.8840488

Abstract

This work reports the analysis of near-infrared luminescence of low phonon energy (510 cm -1 ) fluoroindate glasses co-doped with Er 3+ /Tm 3+ and Er 3+ /Ho 3+ ions pumped by 796 nm, 980 nm laser diode, respectively. Due to donor-acceptor energy transfer and superposition of 1450 nm (Tm 3+ : 3 H 4 → 3 F 4 ) and 1550 nm (Er 3+ : 4 I 13/2 → 4 I 15/2 ) radiative transitions in glass co-doped with 0.1ErF 3 /0.3TmF 3 a broadband emission in the range of third telecommunication window (FWHM = 152 nm, λ exc = 796 nm) was obtained. Analysis of the spectroscopic properties of the 0.8ErF 3 /1.4HoF 3 co-doped glass showed Er 3+ → +R 3+ energy transfer and efficient sensitization of holmium ions leading to the 1.2 μm and 2 μm emission under 980 nm laser diode excitation.

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