Spectroscopic properties and energy transfer of Tm(3+)/Ho(3+)-codoped TeO(2)-WO(3)-ZnO glasses for 1.47mum amplifier.
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.
Chen
Ganxin
G
South China University of Technology, Guangzhou, PR China.
Zhang
Qinyuan
Q
Cheng
Yun
Y
Zhao
Chun
C
Qian
Qi
Q
Yang
Zhongmin
Z
Jiang
Zhonghong
Z
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*
D010087:Oxides; C016774:tellurium dioxide; D013932:Thulium; C511604:tungsten oxide; D013691:Tellurium; D015034:Zinc Oxide; D014414:Tungsten; D006695:Holmium