title: Optical properties of Nd3+ doped bismuth zinc borate glasses.
abstract: Glasses with compositions of (100-x) (Bi2ZnOB2O6) -x Nd2O3 (where x=0.1, 0.3, 0.5, 1 and 2 mol%) were prepared by melt quenching method and characterized through optical absorption, emission and decay curve measurements. Optical absorption spectra have been analyzed using Judd-Ofelt theory. The emission spectra exhibit three peaks at 919, 1063 and 1337 nm corresponding to (4)F3/2 to (4)I9/2, (4)I11/2 and (4)I13/2 transitions in the near infrared region. The emission intensity of the (4)F3/2 to (4)I11/2 transition increases with increase of Nd(3+) concentration up to 1 mol% and then concentration quenching is observed for 2 mol% of Nd(3+) concentration. The lifetimes for the (4)F3/2 level are found to decrease with increase in Nd2O3 concentration in the glasses. The decay curves of the glass up to 0.3 mol% of Nd(3+) exhibit single exponential nature and thereafter the curves become nonexponential nature (0.5, 1 and 2 mol%). The nonexponential curve has been fitted to the Inokuti-Hirayama model to understand the nature of energy transfer process.
authors: Department of Physics, Pondicherry University, Puducherry 605 014, India.
authors: B
authors: B
authors: Shanmugavelu
authors: Department of Physics, Yogi Vemana University, Kadapa 516 003, India.
authors: V
authors: V
authors: Venkatramu
authors: Department of Physics, Pondicherry University, Puducherry 605 014, India. Electronic address: ravi.phy@pondiuni.edu.in.
authors: V V
authors: VV
authors: Ravi Kanth Kumar
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D001881:Borates / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D049449:Luminescence; D009354:Neodymium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D001881:Borates; D010087:Oxides; D009354:Neodymium; C505244:neodymium oxide; D015032:Zinc; D001729:Bismuth
keywords: Borate glasses; Judd–Ofelt analysis; Lifetime; Luminescence; Radiative properties