Author Affiliations
1 Key Laboratory of Laser & Infrared System, Ministry of Education, Shandong University, Qingdao 266237, China
2 School of Information Science and Engineering, Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China
3 Institute of Novel Semiconductors, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
4 Leibniz-Institut für Kristallzüchtung (IKZ), Berlin 12489, Germany
We present our efforts towards power scaling of Er:Lu2O3 lasers at 2.85 µm. By applying a dual-end diode-pumped resonator scheme, we achieve an output power of 14.1 W at an absorbed pump power of 59.7 W with a slope efficiency of 26%. In a single-end pumped resonator scheme, an output power of 10.1 W is reached under 41.9 W of absorbed pump power. To the best of our knowledge, this is the first single crystalline mid-infrared rare-earth-based solid-state laser with an output power exceeding 10 W at room temperature.
high-power continuous-wave laser mid-infrared laser dual-end pump scheme 
Chinese Optics Letters
2024, 22(1): 011403

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