title: Intense 2.7 µm emission and structural origin in Er3+-doped bismuthate (Bi2O3-GeO2-Ga2O3-Na2O) glass.
abstract: The 2.7 μm emission properties in Er3+-doped bismuthate (Bi2O3-GeO2-Ga2O3-Na2O) glass were investigated in the present Letter. An intense 2.7 μm emission in Er3+-doped bismuthate glass was observed. It is found that Er3+-doped bismuthate glass possesses high spontaneous transition probability A (65.26 s(-1)) and large 2.7 μm emission cross section σ(em) (9.53×10(-21) cm2) corresponding to the stimulated emission of Er3+:4I11/2→4I13/2 transition. The emission characteristic and energy transfer process upon excitation of a conventional 980 nm laser diode in bismuthate glass were analyzed. Additionally, the structure of bismuthate glass was analyzed by the Raman spectrum. The advantageous spectroscopic characteristics of Er3+ single-doped bismuthate glass together with the prominent thermal property indicate that bismuthate glass might become an attractive host for developing solid-state lasers around 2.7 μm.
authors.affiliation: Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China.
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Guo
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.forename: Lili
authors.initials: L
authors.lastname: Hu
authors.forename: Junjie
authors.initials: J
authors.lastname: Zhang
mesh_terms: D000042:Absorption; D001729:Bismuth / Q000737:chemistry*; D004871:Erbium / Q000737:chemistry*; D005708:Gallium / Q000737:chemistry*; D005857:Germanium / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D017670:Sodium Compounds / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman
chemical_list: D010087:Oxides; D017670:Sodium Compounds; D005857:Germanium; C096707:sodium oxide; C038863:gallium oxide; C040516:germanium oxide; D004871:Erbium; C033301:bismuth oxide; D005708:Gallium; D001729:Bismuth