Abstract

We reported on the spectral properties of Yb–Bi codoped MgOAl2O3ZnOSiO2 glasses. The near-infrared luminescence intensity in Yb–Bi codoped glass was 31 times stronger than that of Bi-doped glass with 980nm laser diode excitation. No optical amplification was observed in Bi-doped glass, while apparent broadband optical amplification between 1270 and 1340nm was observed from Yb–Bi codoped glass with 980nm laser diode excitation. The highest optical gain and gain coefficient at 1270nm of Yb–Bi codoped silicate glass reached to 1.57dB and 7.84dBcm1, respectively. Yb–Bi codoped silicate glass is a promising candidate for broadband optical amplification.

© 2009 Optical Society of America

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