4 April 2005 Optical and spectroscopic properties of erbium-activated modified silica glass with 1.54 μm high quantum efficiency
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Several modified silicate glass samples activated with erbium ions at two different doping rates, namely 0.2 and 0.5 mol%, exhibit at room temperature a fine-structured emission band around 1.5 mm. The decay of luminescence from the Er3+ 4I13/2 metastable level is found to evolve according to a single-exponential law and a lifetime as long as 14.2 ms is measured from the glass with the lower erbium concentration. An estimation of the corresponding radiative lifetime, τrad, is achieved on the basis of various theoretical models. Internal gain curves resulting from absorption and stimulated emission cross sections are also shown. A 75% quantum efficiency is deduced for the less Er3+ concentrated glass, which is nearly the highest one obtained from silica based doped-glasses.
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Vincent Benoit, Vincent Benoit, Shivakiran Narasimha Bantwal Bhaktha, Shivakiran Narasimha Bantwal Bhaktha, Brigitte Boulard, Brigitte Boulard, Stephane Chaussedent, Stephane Chaussedent, Andrea Chiappini, Andrea Chiappini, Alessandro Chiasera, Alessandro Chiasera, Eugene Duval, Eugene Duval, Serge Etienne, Serge Etienne, Maurizio Ferrari, Maurizio Ferrari, Bruno Gaillard-Allemand, Bruno Gaillard-Allemand, Yoann Jestin, Yoann Jestin, Maurizio Mattarelli, Maurizio Mattarelli, Maurizio Montagna, Maurizio Montagna, Andre Monteil, Andre Monteil, Enrico Moser, Enrico Moser, Gualtiero Nunzi Conti, Gualtiero Nunzi Conti, Stefano Pelli, Stefano Pelli, Herve Portales, Herve Portales, Desai Narayana Rao, Desai Narayana Rao, Giancarlo C. Righini, Giancarlo C. Righini, Krishna Chaitanya Vishunubhatla, Krishna Chaitanya Vishunubhatla, } "Optical and spectroscopic properties of erbium-activated modified silica glass with 1.54 μm high quantum efficiency", Proc. SPIE 5723, Optical Components and Materials II, (4 April 2005); doi: 10.1117/12.590252; https://doi.org/10.1117/12.590252

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