title: Ho³⁺Yb³⁺-codoped germanate-tellurite glasses for 2.0 μm emission performance.
abstract: 2.0 μm emission property of a new germanate-tellurite (GT) glass with Ho³⁺/Yb³⁺ codoping is synthesized and analyzed. Efficient 2.0 μm emission of Ho³⁺ ions sensitized by Yb³⁺ ions from the host glass was observed under 980 nm pumping. Based on the measured absorption spectra, the Judd-Ofelt parameters were calculated and discussed. The maximum emission cross section of Ho³⁺ ions transition is 4.36×10(-21) cm2 around 2.0 μm. The energy transfer efficiency is calculated and fitted the decay signals. The good spectroscopic properties suggest that Ho³⁺/Yb³⁺-codoped GT glass may become an attractive host for developing solid state lasers operating in the mid-infrared.
authors.forename: Ya-Pei
authors.initials: YP
authors.lastname: Peng
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Guo
authors.forename: Junjie
authors.initials: J
authors.lastname: Zhang
authors.forename: Long
authors.initials: L
authors.lastname: Zhang
mesh_terms: D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005857:Germanium / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D006695:Holmium / Q000737:chemistry*; D053844:Lasers, Solid-State; D049449:Luminescence; D013691:Tellurium / Q000737:chemistry*; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D005857:Germanium; C026660:tellurous acid; D015018:Ytterbium; D013691:Tellurium; D006695:Holmium