The Fluorescence Properties of Eu3 + in Various Glasses and the Energy Transfer Between Eu3 + and Sm3 +

Abstract

For obtaining shorter wavelength laser glass without using nonlinear optical crystal. The fluorescence properties of Eu3+ were investigated in various glasses. The Eu3+ doped borosilico-phosphate glass has the highest emission intensity of 5Do~7F2 transition compared with other glasses, because it can be doped with high concentration of Eu3+ . The energy transfer and energy backtransfer in Eu3+ _ Sm3+ doped borosilico-phosphate glasses were also investigated. The energy transfer from Sm3+ to Eu3+ is very efficient and the energy backtransfer from Eu3+ to Sm3+ is low. The Eu3+ _ Sm3+ doped borosilico-phosphate glass has a very strong emission in visible range (0.61 /Clm) for the 5Do~7F2 (Eu3+) transition. The emission intensity is about the same as Nd3+ doped phosphate glass (LHG8) at I .06 pm.