[The upconversion luminescence of Tm(0.35)Yb(5):FOV nanophase oxyfluoride vitroceramics].
The upconversion luminescence of nanophase oxyfluoride vitroceramics Tm(0.35)Yb(5) : FOV when excited by a 975 nm diode laser was studied in the present paper. Several ultraviolet upconversion luminescence lines positioned at 363.6 nm, (462.6 nm, 477.0 nm), 648.7 nm, (699.7 nm, 680.7 nm) and (777.6 nm, 800.7 nm) were found. They can be attributed to the fluorescence transitions of 1 D2-->3 H6, 1 G4-->3 H6, 1 G4-->3 F4, 3 F3-->3 H6 and 3 H4-->3 H6 of Tm3+ ion. The careful measurement and analysis of the variation of upconversion luminescence intensity F as a function of the 975 nm pumping laser power P has proven that the upconversion luminescence of 1 D2 state is partly a five-photon upconversion luminescence, while the upconversion luminescence of 1 G4 and 3 H4 state is the three-photon and two-photon upconversion luminescence respectively.
Chen
Xiao-bo
XB
Applied Optics Beijing Area Major Laboratory, Physics Department and Analysis and Testing Center, Beijing Normal University, Beijing 100875, China. xbchen@bnu.edu.cn
Wang
Ya-fei
YF
Sawanobori
Naruhito
N
Yang
Guo-jian
GJ
Cui
Jian-sheng
JS
He
Chen-juan
CJ
Chen
Zhi-jian
ZJ
Liu
Da-he
DH
Peng
Fang-lin
FL
Song
Zeng-fu
ZF