title: [Direct upconversion sensitization luminescence comparison of the ErYb co-doped oxyfluoride fluoride pentaphosphate glass].
abstract: This paper investigates the direct upconversion sensitization luminescence of the ErYb co-doped oxyfluoride glass (ErYb: FOG), fluoride glass (ErYb: ZBLAN) and pentaphosphate noncrystalline (ErYb: PP) excited by a 966 nm diode laser. The splendid upconversion luminescence phenomenon is found. It is resulted from that the Yb3+ concentration in rather high, the energy transfer among Er(3+)-Yb3+ and Yb(3+)-Yb3+ ions is rather strong. An important fact is found that the direct upconversion sensitization luminescence of ErYb: FOG is about 100-100,000 times greater than that of ErYb: PP. And meanwhile it is interesting that the upconversion luminescence intensity of ErYb: FOG is near to that of ErYb: ZBLAN. It is significant to enhance the comprehensive level of up-conversion luminescence.
authors.affiliation: Beijing Normal University, Optical Center, Beijing 100875, China.
authors.forename: Xiao-bo
authors.initials: XB
authors.lastname: Chen
authors.forename: Luan
authors.initials: L
authors.lastname: Chen
authors.forename: Chen-yi
authors.initials: CY
authors.lastname: Zhao
authors.forename: N
authors.initials: N
authors.lastname: Sawanobori
authors.forename: Hui
authors.initials: H
authors.lastname: Ma
authors.forename: Zeng-fu
authors.initials: ZF
authors.lastname: Song
mesh_terms: D004735:Energy Transfer; D004871:Erbium / Q000737:chemistry*; D005453:Fluorescence; D005459:Fluorides / Q000737:chemistry; D005461:Fluorine / Q000737:chemistry; D005898:Glass / Q000737:chemistry; D049449:Luminescence; D010087:Oxides / Q000737:chemistry; D010710:Phosphates / Q000737:chemistry; D010777:Photochemistry / Q000379:methods; D012666:Semiconductors; D013057:Spectrum Analysis / Q000379:methods; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D010087:Oxides; D010710:Phosphates; C012980:fluorophosphate; D005461:Fluorine; D004871:Erbium; C014559:fluorine monoxide; D015018:Ytterbium; D005459:Fluorides