Optical parameters and upconversion fluorescence in Tm3+/Yb3+ codoped tellurite glass |
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Authors: | Q J Huang Q P Wang J Chang X Y Zhang Z J Liu and G Y Yu |
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Institution: | (1) Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Germany, 93040 Regensburg, Germany |
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Abstract: | Tm3+/Yb3+ codoped tellurite glass has been prepared. Density, refractive index, optical absorption, Judd-Ofelt parameters and spontaneous
transition probabilities of Tm3+ have been measured and calculated, respectively. Intense blue three-photon upconversion fluorescence and S-band (1470 nm)
fluorescence were investigated under the excitation of a 980 nm diode laser at room temperature. Judd-Ofelt parameters, strong
blue three-photon upcoversion emission of Tm3+ in glass indicate that Tm3+/Yb3+ codoped tellurite glass is a promising blue color upconversion optical and laser material. In addition, experiment results
showed the 980 nm laser was more efficient than 808 nm laser when pumping Tm3+/Yb3+ codoped tellurite glass, Tm3+/Yb3+ codoped tellurite glass also could be a promising material for S-band amplification. |
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