title: Optical properties of Er3+ ions doped in oxyfluoroborate glass.
abstract: In this paper the Stark components of 4S(3/2), 2H(11/2) and 4I(15/2) levels of Er3+ ion doped in oxyfluoroborate glass have been resolved using laser excitation and fluorescence measurements. The lifetime of 4S(3/2) level as a function of Er3+ concentration in the glass host has also been measured. Concentration quenching due to interaction among rare earth ions and the mechanism responsible for the same has been elucidated. The Judd-Ofelt analysis of the absorption spectrum has also been carried out.
authors.affiliation: Laser and Spectroscopy Laboratory, Department of Physics, Banaras Hindu University, Varanasi 221 005, India. kumarakshaya@rediffmail.com
authors.forename: Akshaya
authors.initials: A
authors.lastname: Kumar
authors.forename: D K
authors.initials: DK
authors.lastname: Rai
authors.forename: S B
authors.initials: SB
authors.lastname: Rai
mesh_terms: D004871:Erbium / Q000737:chemistry*; D005898:Glass / Q000737:chemistry; D006207:Half-Life; D007834:Lasers; D008027:Light; D013053:Spectrophotometry
chemical_list: D004871:Erbium