1. Spectroscopy and 3.01 μm laser performance of Ho:YAP oxide crystal pumped by 1150 nm Raman laser.
- Author
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Qiao, Yang, Sun, Dunlu, Zhang, Huili, Luo, Jianqiao, Quan, Cong, Hu, Lunzhen, Han, Zhiyuan, Dong, Kunpeng, Chen, Yuwei, and Cheng, Maojie
- Subjects
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RAMAN lasers , *LASER pumping , *CONTINUOUS wave lasers , *ORTHORHOMBIC crystal system , *LASERS , *CRYSTALS - Abstract
• High-quality Ho:YAP crystal was fabricated by the Czochralski method. • The structure, spectroscopy and J-O parameters of Ho:YAP were discussed. • For the first time, ∼3 μm CW laser was realized in single Ho-doped crystal host. • Maximum power of 176 mW and slope efficiency of 3.36% was obtained. We demonstrate the spectroscopy and mid-infrared laser performance on the Ho:YAP oxide crystal grown by the Czochralski method in detail. The crystal belongs to orthorhombic system of Pnmb (62) space group and shows high crystalline quality. The lifetimes of 5I 6 and 5I 7 levels are 0.412 and 4.485 ms, respectively. Particularly, under 1150 nm Raman fiber laser pumping, a 3.01 μm CW laser with a maximum power of 181 mW and slope-efficiency of 3.35% is achieved. The M2 factor of 1.35/1.37 indicates that the yield laser has excellent beam quality. The results reveal that the Ho:YAP crystal possesses great potential for developing efficient 3.0 μm mid-infrared lasers. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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