title: Intense 2.7 µm emission of Er3+-doped water-free fluorotellurite glasses.
abstract: By physical and chemical dehydration techniques, a group of Er3+-doped water-free fluorotellurite glasses with a composition of 60TeO2-30ZnF2-10NaF(TZNF60,mol%)+x Er2O3(wt%,x=0~1.5) were fabricated. Under 978 nm excitation, the 4I(11/2)→4I(13/2) emission of Er3+ ions in TZNF60-glass was investigated: τ(f) is of 1.07~1.93 ms and emission bandwidth is about 163 nm at 2.71 µm, which benefits from the absence of OH groups and the decreased phonon energy with the addition of fluorides. In contrast, 1.25Er-TZNF60 glass is proposed to be a promising material for mid-infrared fiber lasers at around 2.7 µm.
authors: State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi’an 710119, China.
authors: Huan
authors: H
authors: Zhan
authors: Zhiguang
authors: Z
authors: Zhou
authors: Jianli
authors: J
authors: He
authors: Aoxiang
authors: A
authors: Lin
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D004871:Erbium / Q000737:chemistry*; D005461:Fluorine / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D007834:Lasers; D013691:Tellurium / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D005461:Fluorine; D004871:Erbium; C026660:tellurous acid; D013691:Tellurium