title: Spectroscopic properties and energy transfer of Tm(3+)/Ho(3+)-codoped TeO(2)-WO(3)-ZnO glasses for 1.47mum amplifier.
abstract: We report on spectroscopic properties and energy transfer of Tm(3+)/Ho(3+)-codoped tungsten tellurite glasses for 1.47microm amplifier. Fluorescence spectra and the analysis of energy transfer indicate that Ho(3+) is an excellent codopant for 1.47microm emission. Comparing with other tellurite glasses, the radiative lifetime of the (3)H(4) level of Tm(3+) in tungsten tellurite glass is slightly lower, but the spontaneous emission probability, stimulated emission cross-section and the figure of merit for bandwidth are obviously larger. Although the pump efficiency of tungsten tellurite amplifier is approximately 50% less than that of fluoride glass, the figure of merit for bandwidth is approximately three times larger in tungsten tellurite glass than in fluoride glass. The results indicate that Tm(3+)/Ho(3+)-codoped tungsten tellurite glass is attractive for broadband amplifier.
authors.affiliation: South China University of Technology, Guangzhou, PR China.
authors.forename: Ganxin
authors.initials: G
authors.lastname: Chen
authors.forename: Qinyuan
authors.initials: Q
authors.lastname: Zhang
authors.forename: Yun
authors.initials: Y
authors.lastname: Cheng
authors.forename: Chun
authors.initials: C
authors.lastname: Zhao
authors.forename: Qi
authors.initials: Q
authors.lastname: Qian
authors.forename: Zhongmin
authors.initials: Z
authors.lastname: Yang
authors.forename: Zhonghong
authors.initials: Z
authors.lastname: Jiang
mesh_terms: D005898:Glass / Q000737:chemistry*; D006695:Holmium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D013057:Spectrum Analysis; D013691:Tellurium / Q000737:chemistry*; D013932:Thulium / Q000737:chemistry*; D014414:Tungsten / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D010087:Oxides; C016774:tellurium dioxide; D013932:Thulium; C511604:tungsten oxide; D013691:Tellurium; D015034:Zinc Oxide; D014414:Tungsten; D006695:Holmium