title: Yb3+ sensitized Tm3+ upconversion in tellurite lead oxide glass.
abstract: Triply ionized thulium/thulium--ytterbium doped/codoped TeO2-Pb3O4 (TPO) glasses have been fabricated by classical quenching method. The upconversion emission spectra in the Tm3+/Tm3+-Yb3+ doped/codoped glasses upon excitation with a diode laser lasing at ∼980 nm has been studied. Effect of the addition of the Yb3+ on the upconversion emission intensity in the visible and near infrared regions of the Tm3+ doped in TPO glass has been studied and the processes involved explored.
authors.affiliation: Laser and Spectroscopy Laboratory, Department of Applied Physics Indian School of Mines, Dhanbad 826004, India.
authors.forename: Deepak Kumar
authors.initials: DK
authors.lastname: Mohanty
authors.forename: Vineet Kumar
authors.initials: VK
authors.lastname: Rai
authors.forename: Y
authors.initials: Y
authors.lastname: Dwivedi
mesh_terms: D005898:Glass / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D013057:Spectrum Analysis; D013691:Tellurium / Q000737:chemistry*; D013932:Thulium / Q000737:chemistry*; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D010087:Oxides; D007854:Lead; C047365:lead oxide; D013932:Thulium; C026660:tellurous acid; D015018:Ytterbium; D013691:Tellurium