The effects of Er 3 + ion concentration on 2.0- μ m emission performance in Ho 3 + /Tm 3 + co-doped Na 5Y 9F 32 single crystal under 800-nm excitation
Benli Ding(丁本利), Xiong Zhou(周雄), Jianli Zhang(章践立), Haiping Xia(夏海平), Hongwei Song(宋宏伟), and Baojiu Chen(陈宝玖)
中国物理B . 2021, (1): 17801 .  DOI: 10.1088/1674-1056/abaede