Miaomao He, Sheng Chen, Quanxin Na, Shaojuan Luo, Haiyong Zhu, Ying Li, Changwen Xu, Dianyuan Fan. Watt-level Pr3+:YLF deep red laser pumped by a fiber-coupled blue LD module or a single-emitter blue LD[J]. Chinese Optics Letters, 2020, 18(1): 011405
- Chinese Optics Letters
- Vol. 18, Issue 1, 011405 (2020)
Fig. 1. Power characteristic of LD module and the output spectrum at the maximum output power.
Fig. 2. Schematic diagram of Pr:YLF laser at 720.9 nm pumped by the 443.6 nm LD module.
Fig. 3. (Top) 720.9 nm laser output curves of the 6-mm-long Pr:YLF crystal. (Bottom) 10-mm-long Pr:YLF crystal pumped by the 443.6 nm LD module.
Fig. 4. Spectrum of the deep red laser at 720.9 nm.
Fig. 5. (Left) Far field patterns of the laser beam recorded at different output power. (Right) Internal temperature distribution of 10-mm-long Pr:YLF crystal at 12 W absorbed power.
Fig. 6. (Top) Absorption spectrum of Pr:YLF at 444 nm and wavelength-shift of single-emitter LD. (Bottom) Schematic diagram of Pr:YLF laser pumped by a single 446 nm LD and pump beam pattern at the focus point.
Fig. 7. Output characteristics of 10-mm-long Pr:YLF pumped by single 446 nm LD. (Top) Focal length is 50 mm; (bottom) focal length is 80 mm.
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