Codoping Na+ to modulate the spectroscopy and photoluminescence properties of Yb3+ in CaF2 laser crystal.
Three kinds of Yb3+ - and Na+-codoped CaF2 laser crystal with different Na:Yb ratios of 0, 1.5, and 10 are grown by the temperature gradient technique. Room-temperature absorption, photoluminescence spectra, and fluorescence lifetimes belonging to the transitions between ground state 2F7/2 and excited state 2F5/2 of Yb3+ ions in the three crystals are measured to study the effect of Na+. Experimental results show that codoping Na+ ions in different Na:Yb ratios can modulate the spectroscopy and photoluminescence properties of Yb3+ ions in a CaF2 lattice in a large scope.
Su
Liangbi
L
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Qinghe Road 390, Jiading, Shanghai 201800, China. su_lb@163.com
Xu
Jun
J
Li
Hongjun
H
Yang
Weiqiao
W
Zhao
Zhiwei
Z
Si
Jiliang
J
Dong
Yongjun
Y
Zhou
Guoqing
G