title: Upconversion properties of Er3+/Yb3+ co-doped TeO2-TiO2-K2O glasses.
abstract: The Er3+/Yb3+ co-doped TeO2-TiO2-K2O glasses were prepared by conventional melting procedures, and their upconversion spectra were performed. The dependence of luminescence intensity on the ratio of Yb3+/Er3+ was studied, and the relationship between green upconversion luminescence intensity and Er3+ concentration is discussed in detail. The 546 nm green upconversion luminescence intensity is optimised in the studied glasses either when the Yb3+/Er3+ ratio is 25/1 and Er3+ concentration is 0.1 mol%, or when the Yb3+/Er3+ ratio is 10/1 and Er3+ concentration is 0.15 mol%. These glasses could be one of the potential candidates for LD pumping microchip solid-state lasers.
authors.affiliation: Institute of Optical Communication Materials, College of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, PR China. sufangning-2003@etang.com
authors.forename: Fangning
authors.initials: F
authors.lastname: Su
authors.forename: Zaide
authors.initials: Z
authors.lastname: Deng