Abstract
The Nd<sup>3+</sup>, Yb<sup>3+</sup> singly doped and Nd<sup>3+</sup> /Yb<sup>3+</sup> co-doped lithium aluminum silicate glasses are fabricated by using a conventional melt quenching technique in air atmosphere, with the molar composition of (60-a-b)SiO<sub>2</sub>-3Al<sub>2</sub>O<sub>3</sub>-20Li<sub>2</sub>O-12MgO-5CaO-aNd<sub>2</sub>O<sub>3</sub>-bYb<sub>2</sub>O<sub>3</sub> (with a=0, 0.25, 0.5, 1 and b=0,2). The Spectroscopic properties of 1.0 μm emission and Luminescence lifetime in Nd<sup>3+</sup> /Yb<sup>3+</sup> co-doped lithium aluminum silicate glasses are investigated under 808 nm excitation. The Judd–Ofelt theory is used to study the spectroscopic properties of Nd<sup>3+</sup> . Meanwhile, the emission cross-section of Yb3+ are obtained by using the reciprocity method. A broad emission band from 950 to 1,100 nm is detected when the Nd<sup>3+</sup> /Yb<sup>3+</sup> co-doped in lithium aluminum silicate glasses excited by 808 nm LD. The energy transfer process from Nd<sup>3+</sup> →Yb<sup>3+</sup> co-doped in lithium aluminum silicate glasses is described in this paper.
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