Abstract
We reported on the spectral properties of Yb–Bi codoped glasses. The near-infrared luminescence intensity in Yb–Bi codoped glass was times stronger than that of Bi-doped glass with laser diode excitation. No optical amplification was observed in Bi-doped glass, while apparent broadband optical amplification between 1270 and was observed from Yb–Bi codoped glass with laser diode excitation. The highest optical gain and gain coefficient at of Yb–Bi codoped silicate glass reached to and , respectively. Yb–Bi codoped silicate glass is a promising candidate for broadband optical amplification.
© 2009 Optical Society of America
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