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Your search keyword '"Li, Jinyan"' showing total 9 results
Start Over Author "Li, Jinyan" Journal applied physics a: materials science & processing
9 results on '"Li, Jinyan"'

9. Blue upconversion in Yb3+/Tm3+ co-doped silica fiber based on glass phase-separation technology.

Author

Yang, Yu, Chu, Yingbo, Chen, Zhangru, Xing, Yingbin, Hu, Xionwei, Li, Haiqing, Peng, Jinggang, Dai, Nengli, Li, Jinyan, and Yang, Luyun

Subjects
PHOTON upconversion, RARE earth ions, SILICA fibers, PHASE separation, REFRACTIVE index
Abstract

Yb3+/Tm3+ co-doped silica fiber was prepared successfully by glass phase-separation technology. The measured refractive index profile indicated that the active fiber core had an excellent uniformity. The highest emission intensity was obtained in a sample with a Yb3+ concentration of 0.3 mol/L and a Tm3+ concentration of 0.1 mol/L. Under the excitation at 976 nm, intense blue upconversion emission of Tm3+ at 474 nm was observed due to energy transfer from Yb3+ to Tm3+. A three-photon process was responsible for the blue emission. Due to re-absorption resulted from the Tm3+:3H6→1G4 transition, the blue emission peak was red-shifted. It is suggested that the fiber preparation technology based on glass phase-separation technology can be a potential candidate for preparing active fibers with large core or complex fiber structure. [ABSTRACT FROM AUTHOR]

Published
2018
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