1. Structure, spectroscopy and LD end-pumped laser performance of an Er,Pr:LuYSGG crystal operated at ∼2.8 μm.
- Author
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Zhang, Huili, Sun, Dunlu, Luo, Jianqiao, Quan, Cong, Qiao, Yang, Chen, Yuwei, Dong, Kunpeng, Wang, Zhentao, Li, Hongyuan, and Cheng, Maojie
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MID-infrared lasers , *LASERS , *CRYSTALS , *SPECTROMETRY , *REFRACTIVE index , *CONTINUOUS wave lasers , *INFRARED lasers - Abstract
We demonstrate the structure, spectroscopy, and laser performance of an Er3+ and Pr3+ co-doped LuYSGG crystal grown by the Cz method. The XRD result shows that it belongs to the cubic system with the space group Ia3¯d. A refractive index curve in the range of 320–3000 nm is obtained by fitting the Sellmeier equation. The lifetimes of the 4I13/2 and 4I11/2 levels are 0.871 and 0.728 ms, and the ratio is reduced obviously from 3.4 to 1.2 due to the doping of deactivator Pr3+. In CW mode, a maximum output power of 1059 mW is achieved with a slope efficiency of 17.58% and laser center wavelength of ∼2.8 μm. Beam quality factors of 1.40/1.34 are achieved. The results suggest that the Er,Pr:LuYSGG crystal is a potential candidate for generating a high-power mid-infrared laser and can be applied in irradiation environments. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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