DOU Jing-tao, HOU Yan-bing. Upconversion Luminescence of ZBLAN:Yb<sup>3+</sup>, Tm<sup>3+</sup> Co-excited by Double-frequency with Both 808 and 980 nm Lasers[J]. Chinese Journal of Luminescence, 2008,29(1): 85-88
DOU Jing-tao, HOU Yan-bing. Upconversion Luminescence of ZBLAN:Yb<sup>3+</sup>, Tm<sup>3+</sup> Co-excited by Double-frequency with Both 808 and 980 nm Lasers[J]. Chinese Journal of Luminescence, 2008,29(1): 85-88DOI: