Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 354, Issue 12-13, Pages 1221-1225Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2007.01.106
Keywords
optical spectroscopy; optical properties; absorption; luminescence; oxide glasses; germanates; silicates
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New broadband near infrared luminescence covering the whole work windows (1260-1625 nm) of the current wavelength division multiplexing (WDM) system was found from bismuth-activated M2O-Al2O3-SiO2 (M = Li, Na) and Li2O-Ta2O5-SiO2 glasses at room temperature in the case of 808 nm-laser excitation. But the near infrared luminescence mechanism of the bismuth-activated glasses is not well understood up to now. The figure-of-merits of bandwidth and gain of the glasses are better than those of Er3+-doped silicate glasses and Ti3+ doped sapphire, implying they are the promising gain-medium candidates for the broadband amplifiers and the widely tunable laser sources. (c) 2007 Elsevier B.V. All rights reserved.
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