title: Codoping Na+ to modulate the spectroscopy and photoluminescence properties of Yb3+ in CaF2 laser crystal.
abstract: 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.
authors.affiliation: Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Qinghe Road 390, Jiading, Shanghai 201800, China. su_lb@163.com
authors.forename: Liangbi
authors.initials: L
authors.lastname: Su
authors.forename: Jun
authors.initials: J
authors.lastname: Xu
authors.forename: Hongjun
authors.initials: H
authors.lastname: Li
authors.forename: Weiqiao
authors.initials: W
authors.lastname: Yang
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Zhao
authors.forename: Jiliang
authors.initials: J
authors.lastname: Si
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Dong
authors.forename: Guoqing
authors.initials: G
authors.lastname: Zhou