title: Investigation of concentration quenching and 1.3 microm emission in Nd(3+)-doped bismuth glasses.
abstract: Nd(2)O(3)-doped 70Bi(2)O(3)-20B(2)O(3)-10SiO(2)-xNd(2)O(3) (x=0.1, 0.3, 0.5, 0.7, 1.0, 1.5 mol%) bismuth glasses were prepared by the conventional melt-quenching method, and the Nd(3+):(4)F(3/2)-->(4)I(13/2) fluorescence properties had been studied for different Nd(3+) concentrations. The Judd-Ofelt analysis for Nd(3+) ions in bismuth boron silicate glasses was also performed on the base of absorption spectrum. The transition probabilities, excited state lifetimes, the fluorescence branching ratios, quantum efficiency and the stimulated emission cross-sections of (4)F(3/2)-->(4)I(13/2) transition were calculated and discussed. Based on the electric dipole-dipole interaction theory, the interaction parameters: C(DD), for the energy migration rate (4)F(3/2), (4)I(9/2)-->(4)F(3/2), (4)I(9/2) and C(DA), for cross-relaxation rate (4)F(3/2), (4)I(9/2)-->(4)I(15/2), (4)I(15/2), and/or (4)F(3/2), (4)I(9/2)-->(4)I(13/2), (4)I(15/2) in bismuth boron silicate glasses were about 18.4 x 10(-40)cm(6)/s and 3.4 x 10(-40)cm(6)/s, respectively.
authors.affiliation: Faculty of Information Science and Engineering, The State Key Laboratory Base of Novel Functional Materials and Preparation Science, Ningbo University, Zhejiang 315211, PR China.
authors.forename: Qiuhua
authors.initials: Q
authors.lastname: Nie
authors.forename: Xujie
authors.initials: X
authors.lastname: Li
authors.forename: Shixun
authors.initials: S
authors.lastname: Dai
authors.forename: Tiefeng
authors.initials: T
authors.lastname: Xu
authors.forename: Zhenjuan
authors.initials: Z
authors.lastname: Jin
authors.forename: Xianghua
authors.initials: X
authors.lastname: Zhang
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D004735:Energy Transfer; D005453:Fluorescence; D005898:Glass / Q000737:chemistry*; D008956:Models, Chemical; D009354:Neodymium / Q000737:chemistry*; D012031:Refractometry; D013053:Spectrophotometry