Spectroscopic properties of Nd3+/Yb3+ co-doped in lithium aluminum silicate glass for 1.0 μm fiber laser

The Nd 3+ , Yb 3+ singly doped and Nd 3+ /Yb 3+ 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 2 -3Al 2 O 3 -20Li 2 O-12MgO-5CaO-aNd 2 O 3 -bYb 2 O 3 (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 3+ /Yb 3+ 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 3+ . 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 3+ /Yb 3+ co-doped in lithium aluminum silicate glasses excited by 808 nm LD. The energy transfer process from Nd 3+ →Yb 3+ co-doped in lithium aluminum silicate glasses is described in this paper.