Spectroscopic properties and Judd-Ofelt theory analysis of $Dy3+$ doped oxyfluoride silicate glass Available to Purchase

$Dy3+$ doped oxyfluoride silicate glass was prepared and its optical absorption, $1.3μm$ emission, and upconversion luminescence properties were studied. Furthermore, the Judd-Ofelt [Phys. Rev. 127, 750 (1962); J. Chem. Phys. 37, 511 (1962)] intensity parameters, oscillator strengths, spontaneous transition probability, fluorescence branching ratio and radiative lifetime were calculated by Judd-Ofelt theory, while stimulated emission cross section of $H9∕26+F11∕26→H15∕26$ transition was calculated by McCumber theory [Phys. Rev. A. 134, 299 (1964)]. According to the obtained Judd-Ofelt intensity parameters $Ω2=2.69×10−20cm2$⁠, $Ω4=1.64×10−20cm2$⁠, and $Ω6=1.64×10−20cm2$⁠, the radiative lifetime was calculated to be $810μs$ for $1.3μm$ emission, whose full width at half maximum and $σe$ were $115nm$ and $2.21×10−20cm2$⁠, respectively. In addition, near infrared to visible upconversion luminescence was observed and evaluated. The results suggest that $Dy3+$ doped oxyfluoride silicate glass can be used as potential host material for developing broadband optical amplifiers and laser applications.