Effect of Iron and Copper Impurity Ions on Laser
Efficiency of Phosphate Laser Glass
XU Yong-Chun, CHEN Dan-Ping, LI Shun-Guang, HU Li-Li, TANG Jing-Ping
Journal of Inorganic Materials . 2015, (3): 240 -244 .  DOI: 10.15541/jim20140408