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Keywords = InnoSlab

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12 pages, 4888 KB  
Article
Compact Partially End-Pumped Innoslab Laser Based on Micro-Cylindrical Lens Array Homogenizer
by Xinhui Sun, Xiaonan Zhao, Jinxin Chen, Yajun Wu, Yibin Fu, Gang Cheng, Xi Chen, Pan Liu, Linhao Shang, Guangqiang Fan, Huihui Gao, Yan Xiang and Tianshu Zhang
Photonics 2024, 11(10), 932; https://doi.org/10.3390/photonics11100932 - 1 Oct 2024
Cited by 1 | Viewed by 1683
Abstract
We demonstrate a compact, partially end-pumping Innoslab laser based on a micro-cylindrical lens array homogenizer. A dimension of 12 × 0.4 mm2 flat-top pumping line with a Gaussian intensity distribution across the line was simulated by the ray tracing technique. The rate [...] Read more.
We demonstrate a compact, partially end-pumping Innoslab laser based on a micro-cylindrical lens array homogenizer. A dimension of 12 × 0.4 mm2 flat-top pumping line with a Gaussian intensity distribution across the line was simulated by the ray tracing technique. The rate equations considering the asymmetric transverse spatial distributions are theoretically developed. The simulation results are in good agreement with the experimental results. Preliminary data shows that for a pump power of 260 W, a maximum pulse energy of 15.7 mJ was obtained with a pulse width of 8.5 ns at a repetition frequency of 1 kHz. The beam quality M2 factors in the unstable and stable directions were 1.732 and 1.485, respectively. The technology has been successfully applied to temperature and humidity profiling lidar and ozone lidar and has been productized, yielding direct economic value. Full article
(This article belongs to the Section Lasers, Light Sources and Sensors)
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7 pages, 2758 KB  
Communication
210-W, Quasi-Continuous Wave, Nd:YAG InnoSlab Laser at 1319 nm
by Xiangrui Meng, Xingwang Luo, Junzhi Ye, Xiaoming Chen, Xuguang Zhang, Lei Zhang, Qingsong Gao and Baole Lu
Photonics 2023, 10(7), 730; https://doi.org/10.3390/photonics10070730 - 26 Jun 2023
Cited by 2 | Viewed by 2561
Abstract
In this paper, we demonstrate a high-power, quasi-continuous wave using a laser-diode dual-end-pumped Nd:YAG InnoSlab laser at 1319 nm. The maximum average output power of 210 W at a single 1319 nm wavelength is obtained with an optical-optical efficiency of 18.8% from absorbed [...] Read more.
In this paper, we demonstrate a high-power, quasi-continuous wave using a laser-diode dual-end-pumped Nd:YAG InnoSlab laser at 1319 nm. The maximum average output power of 210 W at a single 1319 nm wavelength is obtained with an optical-optical efficiency of 18.8% from absorbed pump power to laser output. The output pulse duration is 246 μs at the repetition of 500 Hz, and the beam quality factors of M2 are 1.37 and 1.47 in the horizontal and vertical directions, respectively. This is the first report on high-power, quasi-continuous wave using Nd:YAG InnoSlab lasers at 1319 nm with good beam quality. Full article
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7 pages, 2471 KB  
Communication
Hybrid Resonator 1319 nm Nd:YAG InnoSlab Laser
by Shengzi Zhang, Tanghan Chen, Xiaomeng Liu, Hengli Zhang, Jiang Wang and Heqing Guo
Photonics 2023, 10(6), 652; https://doi.org/10.3390/photonics10060652 - 5 Jun 2023
Cited by 2 | Viewed by 3016
Abstract
The InnoSlab laser has the advantages of excellent thermal management and high overlapping efficiency. In this work, we report an InnoSlab laser with high efficiency at 1319 nm end-pumped 0.6at.% Nd:YAG by 808 nm. The hybrid stable–unstable resonator was adopted. For a cavity [...] Read more.
The InnoSlab laser has the advantages of excellent thermal management and high overlapping efficiency. In this work, we report an InnoSlab laser with high efficiency at 1319 nm end-pumped 0.6at.% Nd:YAG by 808 nm. The hybrid stable–unstable resonator was adopted. For a cavity length of 17.9 mm and absorbed pumped power of 423.5 W, the output power of 81 W was obtained at T = 5%, exhibiting an optical conversion efficiency of 19.13% and a slope efficiency of 29.80%. Full article
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