Chinese Optics Letters, 2021, 19 (8): 081404, Published Online: May. 8, 2021
Spectroscopic and laser properties of Er3+, Pr3+ co-doped LiYF4 crystal Download: 695次
Abstract
In this paper, the absorption and fluorescence spectra of , co-doped (Er,Pr:YLF) crystal were measured and analyzed. The co-doping was proved to effectively enhance the mid-infrared transition at the 2.7 μm with 74.1% energy transfer efficiency from to . By using the Judd–Ofelt theory, the stimulated emission cross section was calculated to be at 2685 nm and at 2804.6 nm. Moreover, a diode-end-pumped Er,Pr:YLF laser operating at 2659 nm was realized for the first time, to the best of our knowledge. The maximum output power was determined to be 258 mW with a slope efficiency of 7.4%, and the corresponding beam quality factors and . Our results suggest that Er,Pr:YLF should be a promising material for 2.7 μm laser generation.
Zhengda Sun, Feifei Wang, Haiping Xia, Hongkun Nie, Kejian Yang, Ruihua Wang, Jingliang He, Baitao Zhang. Spectroscopic and laser properties of Er3+, Pr3+ co-doped LiYF4 crystal[J]. Chinese Optics Letters, 2021, 19(8): 081404.