后向同带泵浦光纤激光实现大于8千瓦高光束质量输出

The success of high-power fiber lasers is fueled by maturation of active and passive fibers, combined with the availability of high-power fiber-based components. In this contribution, we first overview the enormous potential of rare-earth doped fibers in spectral coverage and recent developments of key fiber-based components employed in high-power laser systems. Subsequently, the emerging functional active and passive fibers in recent years, which exhibit tremendous advantages in balancing or mitigating parasitic nonlinearities hindering high-power transmission, are outlined from the perspectives of geometric and material engineering. Finally, novel functional applications of conventional fiber-based components for nonlinear suppression or spatial mode selection, and correspondingly, the high-power progress of function fiber-based components in power handling are introduced, which suggest more flexible controllability on high-power laser operations. Graphical abstract

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Functional Fibers and Functional Fiber-Based Components for High-Power Lasers

Chen

Yao

Huang

et al. 2022

Adv. Fiber Mater.

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高功率高光束质量级联泵浦掺镱光纤激光器研究进展

Xiao Hu,

Li Ruixian,

Wu Hanshuo

et al. 2023

光学学报

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低热效应高光束质量自倍频黄光激光器

Wang Aoyang,

Yu Xiangsheng,

Yuan Guang

2023

激光与光电子学进展

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The development of selffrequency doubling lasers has been significantly limited owing to the thermal effect.To reduce the thermal effect of lasers and obtain higher beam quality yellow laser output, a Yb∶ YCOB selffrequency doubling crystal yellow laser pumped by a 1020 -nm laser is proposed. The influence of the thermal lens effect, because of the selffrequency doubling crystalabsorbing pump light energy, on the phase matching condition during the process of optical frequency doubling is explained on the basis of a theoretical analysis. Furthermore, the analysis also yields an explanation for the improvement in the quality of the 1020 -nm singleband pumping mode beam, as compared with that of the traditional 976 -nm laser diode pumping mode. A 570 -nm yellow laser with higher beam quality is obtained through experiments. The beam quality factors correspond to M 2 x = 1. 41 and M 2 y = 1. 87. The results indicate that the quality of the outgoing beam at a wavelength of 1020 nm is significantly higher than that at 976 nm, and the spectrum width is narrower. The results of the study play a guiding role in reducing the thermal effect of Yb∶ YCOB selffrequency doubling lasers and obtaining highpower yellow lasers with higher beam quality and narrower spectrum width.

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后向同带泵浦光纤激光实现大于8千瓦高光束质量输出

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Functional Fibers and Functional Fiber-Based Components for High-Power Lasers

Functional Fibers and Functional Fiber-Based Components for High-Power Lasers

高功率高光束质量级联泵浦掺镱光纤激光器研究进展

低热效应高光束质量自倍频黄光激光器

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