3 October 1996 Blue upconversion with excitation at 970 nm in Yb0.18-doped Tm0.03LaP5O14/Tm0.1LaP5O14
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Abstract
Much strong blue emission has been observed in pentaphosphate non crystals at room temperature, highly doped with Yb3+ and Tm3+ when excited into the Yb3+ 2F7/2 state and the excited states of Tm3+ at 966 nm by laser diode. Energy transfer and back transfer between the two rare earth ions, participation of phonons, and pair induced quenching were demonstrated to be responsible for the upconversion process.
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Zhao Hao, Xiaobo Chen, Guangyin Zhang, Feng Song, Yanbing Hou, "Blue upconversion with excitation at 970 nm in Yb0.18-doped Tm0.03LaP5O14/Tm0.1LaP5O14", Proc. SPIE 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications, (3 October 1996); doi: 10.1117/12.252983; https://doi.org/10.1117/12.252983
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