title: Optical parameters and upconversion fluorescence in Tm3+/Yb3+-doped alkali-barium-bismuth-tellurite glasses.
abstract: Tm(3+)/Yb(3+)-doped alkali-barium-bismuth-tellurite (LKBBT) glasses have been fabricated and characterized. Density, refractive index, optical absorption, absorption and emission cross-sections of Yb(3+), Judd-Ofelt parameters and spontaneous transition probabilities of Tm(3+) have been measured and calculated, respectively. Intense blue three-photon upconversion fluorescence and near-infrared two-photon upconversion fluorescence were investigated under the excitation of a 980 nm diode laser at room temperature. Wide infrared transmission window, high refractive index and strong blue three-photon upconversion emission of Tm(3+) indicate that Tm(3+)/Yb(3+) co-doped LKBBT glasses are promising upconversion optical and laser materials.
authors.affiliation: Faculty of Chemical Engineering and Materials, Dalian Institute of Light Industry, Dalian 116034, PR China. lhai8686@yahoo.com <lhai8686@yahoo.com>
authors.forename: Hai
authors.initials: H
authors.lastname: Lin
authors.forename: Ke
authors.initials: K
authors.lastname: Liu
authors.forename: Lin
authors.initials: L
authors.lastname: Lin
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Hou
authors.forename: Dianlai
authors.initials: D
authors.lastname: Yang
authors.forename: Tiecheng
authors.initials: T
authors.lastname: Ma
authors.forename: Edwin Yun Bun
authors.initials: EY
authors.lastname: Pun
authors.forename: Qingda
authors.initials: Q
authors.lastname: An
authors.forename: Jiayou
authors.initials: J
authors.lastname: Yu
authors.forename: Setsuhisa
authors.initials: S
authors.lastname: Tanabe
mesh_terms: D005453:Fluorescence; D005898:Glass / Q000737:chemistry*; D007834:Lasers; D008672:Metals, Alkali / Q000737:chemistry*; D055095:Optics and Photonics; D013057:Spectrum Analysis; D013696:Temperature
chemical_list: D008672:Metals, Alkali