基于反串联泵浦方案的 10 kW 高光束质量光纤激光器的设计和优化方法

IF 5.2 1区物理与天体物理 Q1 OPTICS

High Power Laser Science and Engineering Pub Date : 2024-04-26 DOI:10.1017/hpl.2024.21

Ruixian Li, Hanshuo Wu, Hu Xiao, Zilun Chen, Jinyong Leng, Liangjin Huang, Zhiyong Pan, Pu Zhou

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引用次数: 0

摘要

在这项研究中，我们研究了光纤参数对受激拉曼散射（SRS）的影响，并确定了反串联泵浦配置中 SRS 演变的独特模式。我们的研究结果表明，反向泵浦中的 SRS 阈值主要由输出传输光纤的长度而非增益光纤决定。通过采用反串联泵浦方案和优化光纤参数，实现了 10 kW 光纤激光器，光束质量 M2 为 1.92。没有观察到模式不稳定或严重的 SRS 限制。据我们所知，这项研究在基于传统双包层掺镱光纤的 10 kW 光纤激光器中实现了最高的光束质量。

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Design and optimization methods towards a 10 kW high beam quality fiber laser based on the counter tandem pumping scheme

In this study, we investigated the influence of fiber parameters on stimulated Raman scattering (SRS) and identified a unique pattern of SRS evolution in the counter tandem pumping configuration. Our findings revealed that the SRS threshold in counter-pumping is predominantly determined by the length of the output delivery fiber rather than the gain fiber. By employing the counter tandem pumping scheme and optimizing the fiber parameters, a 10 kW fiber laser was achieved with beam quality M2 of 1.92. No mode instability or severe SRS limitation was observed. To our knowledge, this study achieved the highest beam quality in over 10 kW fiber lasers based on conventional double-clad Yb-doped fiber.

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来源期刊

High Power Laser Science and Engineering Physics and Astronomy-Nuclear and High Energy Physics

CiteScore

7.10

自引率

4.20%

发文量

401

审稿时长

21 weeks

期刊介绍： High Power Laser Science and Engineering (HPLaser) is an international, peer-reviewed open access journal which focuses on all aspects of high power laser science and engineering. HPLaser publishes research that seeks to uncover the underlying science and engineering in the fields of high energy density physics, high power lasers, advanced laser technology and applications and laser components. Topics covered include laser-plasma interaction, ultra-intense ultra-short pulse laser interaction with matter, attosecond physics, laser design, modelling and optimization, laser amplifiers, nonlinear optics, laser engineering, optical materials, optical devices, fiber lasers, diode-pumped solid state lasers and excimer lasers.