SU Jun, LI Cong, ZHANG Zhen-hua etc. Effect of Lithium Ion on The Up-conversion Efficiency of Yb<sup>3+</sup> and Tm<sup>3+</sup> in Silicate Glass[J]. Chinese Journal of Luminescence, 2017,38(4): 430-434
SU Jun, LI Cong, ZHANG Zhen-hua etc. Effect of Lithium Ion on The Up-conversion Efficiency of Yb<sup>3+</sup> and Tm<sup>3+</sup> in Silicate Glass[J]. Chinese Journal of Luminescence, 2017,38(4): 430-434 DOI: 10.3788/fgxb20173804.0430.
Effect of Lithium Ion on The Up-conversion Efficiency of Yb3+ and Tm3+ in Silicate Glass
co-doped silicate glasses with different contents of Li
+
were prepared by high temperature melting
which could emit 477 nm blue and 654 nm red light under 980 nm LD pumping. The double logarithmic linear fitting of light emission intensity and pump power show that the probability of Tm
3+
upward transition in up-conversion process increases after the adding of Li
+
because of the number of electrons populated at
3
F
2
and
1
G
4
energy levels of Tm
3+
increasing
which leads to improving the probability of radiation transition. The infrared spectra and Raman spectra show that the addition of Li
+
has little effect on phonon energy of the glass substrate
however
the density of phonon states decreases. Finally
the luminescence intensity of Yb
3+
and Tm
3+
in silicate glass is improved by increasing the up-conversion efficiency.
关键词
Keywords
references
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