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Keywords = 1047 nm

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10 pages, 2689 KiB  
Article
Efficient Trichromatic Nd:YLF Laser Emitting at 1047 nm, 1053 nm and 1314 nm
by Felipe Maia Prado, Tomás Junqueira Franco and Niklaus Ursus Wetter
Photonics 2023, 10(10), 1146; https://doi.org/10.3390/photonics10101146 - 12 Oct 2023
Cited by 4 | Viewed by 1758
Abstract
We report a Nd:YLF laser, side-pumped by a diode-stack at 797 nm with 1545 W peak power, resulting in triple-wavelength emission at 1314 nm, 1053 nm, and 1047 nm. The resonator is capable of emitting each wavelength separately as well as any combination [...] Read more.
We report a Nd:YLF laser, side-pumped by a diode-stack at 797 nm with 1545 W peak power, resulting in triple-wavelength emission at 1314 nm, 1053 nm, and 1047 nm. The resonator is capable of emitting each wavelength separately as well as any combination of them simply by cavity alignment. When operating at 1314 nm, the laser reached record optical-to-optical efficiency of 49%, with a slope efficiency of 53%. Full article
(This article belongs to the Section Lasers, Light Sources and Sensors)
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10 pages, 5879 KiB  
Article
Optimized Growth and Laser Application of Yb:LuAG Single-Crystal Fibers by Micro-Pulling-Down Technique
by Anye Wang, Jian Zhang, Shuai Ye, Xiaofei Ma, Baiyi Wu, Siyuan Wang, Feifei Wang, Tao Wang, Baitao Zhang and Zhitai Jia
Crystals 2021, 11(2), 78; https://doi.org/10.3390/cryst11020078 - 20 Jan 2021
Cited by 9 | Viewed by 2966
Abstract
Single-crystal fibers (SCFs) have a great application potential in high-power lasers due to their excellent performance. In this work, high-quality and crack-free Yb3+:Lu3Al5O12 (Yb:LuAG) SCFs were successfully fabricated by the micro-pulling-down (μ-PD) technology. Based on the [...] Read more.
Single-crystal fibers (SCFs) have a great application potential in high-power lasers due to their excellent performance. In this work, high-quality and crack-free Yb3+:Lu3Al5O12 (Yb:LuAG) SCFs were successfully fabricated by the micro-pulling-down (μ-PD) technology. Based on the laser micrometer and the X-ray Laue diffraction results, these Yb:LuAG SCFs have a less than 5% diameter fluctuation and good crystallinity along the axial direction. More importantly, the distribution of Yb ions is proved to be uniform by electron probe microanalysis (EPMA) and the scanning electron microscope (SEM). In the laser experiment, the continuous-wave (CW) output power using a 1 mm diameter Yb:LuAG single-crystal fiber is determined to be 1.96 W, at the central wavelength of 1047 nm, corresponding to a slope efficiency of 13.55%. Meanwhile, by applying a 3 mm diameter Yb:LuAG SCF, we obtain a 4.7 W CW laser output at 1049 nm with the slope efficiency of 22.17%. The beam quality factor M2 is less than 1.1 in both conditions, indicating a good optical quality of the grown fiber. Our results show that the Yb:LuAG SCF is a potential solid-state laser gain medium for 1 μm high-power lasers. Full article
(This article belongs to the Section Inorganic Crystalline Materials)
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