Optical parameters and upconversion fluorescence in Tm3+/Yb3+-doped alkali-barium-bismuth-tellurite glasses |
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Authors: | Lin Hai Liu Ke Lin Lin Hou Yanyan Yang Dianlai Ma Tiecheng Pun Edwin Yun Bun An Qingda Yu Jiayou Tanabe Setsuhisa |
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Institution: | Faculty of Chemical Engineering and Materials, Dalian Institute of Light Industry, Dalian 116034, PR China. lhai8686@yahoo.com |
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Abstract: | Tm(3+)/Yb(3+)-doped alkali-barium-bismuth-tellurite (LKBBT) glasses have been fabricated and characterized. Density, refractive index, optical absorption, absorption and emission cross-sections of Yb(3+), Judd-Ofelt parameters and spontaneous transition probabilities of Tm(3+) have been measured and calculated, respectively. Intense blue three-photon upconversion fluorescence and near-infrared two-photon upconversion fluorescence were investigated under the excitation of a 980 nm diode laser at room temperature. Wide infrared transmission window, high refractive index and strong blue three-photon upconversion emission of Tm(3+) indicate that Tm(3+)/Yb(3+) co-doped LKBBT glasses are promising upconversion optical and laser materials. |
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