Abstract

Yb<sup>3+</sup> singly doped and Yb<sup>3+</sup>/Al<sup>3+</sup>co-doped high silica glass samples are prepared, and their luminescent properties are investigated. Al<sup>3+</sup> is considered as a beneficial activator for Yb<sup>3+</sup>-doped glass. However, the experimental result shows that the addition of Al<sup>3+</sup> results in the transformation from Yb<sup>3+</sup> to Yb<sup>2+</sup> and the improvement in the photon luminescence of Yb<sup>2+</sup>. These characteristics indicate the role of Al<sup>3+</sup> in Yb<sup>3+</sup>-doped glass.

© 2013 Chinese Optics Letters

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