title: Spectroscopic properties of Sm3+ doped lead bismosilicate glasses using Judd-Ofelt theory.
abstract: The spectroscopic properties of Sm(3+) ions in lead bismosilicate glasses (PBSS) as a function of bismuth oxide were investigated using optical absorption and fluorescence spectra. These glasses have shown strong absorption and emission bands in the near infrared and visible region respectively. From the measured absorption spectra, Judd-Ofelt intensity parameters Ω2, Ω4 and Ω6 were determined by applying least square analysis method. The variation of Ω2 and Ω6 with Bi2O3 content has been attributed to changes in the asymmetry of the ligand field at the rare earth ion site and to the changes in the rare earth oxygen (RE-O) covalency. The variation of Ω4 with Bi2O3 content has been attributed to rigidity of the samples. Using the Judd Ofelt intensity parameters the other radiative properties like radiative transition probability, radiative life time, branching ratio and the stimulated emission cross-sections of prepared PBSS glasses have been calculated. The values of radiative properties indicate that Sm(3+) ions emit intense reddish-orange emission ((4)G5/2→(6)H7/2) under excitation at 450 nm wavelength.
authors.affiliation: Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonipat 131093, Haryana, India.
authors.forename: Sunil
authors.initials: S
authors.lastname: Bhardwaj
authors.forename: Rajni
authors.initials: R
authors.lastname: Shukla
authors.forename: Sujata
authors.initials: S
authors.lastname: Sanghi
authors.forename: Ashish
authors.initials: A
authors.lastname: Agarwal
authors.forename: Inder
authors.initials: I
authors.lastname: Pal
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D008962:Models, Theoretical; D012493:Samarium / Q000737:chemistry*; D013053:Spectrophotometry
chemical_list: D007854:Lead; D012493:Samarium; C033301:bismuth oxide; D001729:Bismuth
keywords: Glasses; Judd–Ofelt theory; Optical properties; Sm(3+) doped glasses; Spectroscopy