Multi-mode stable, megawatt peak power Nd: YAG laser

IF 2 3区物理与天体物理 Q3 OPTICS

Applied Physics B Pub Date : 2025-09-02 DOI:10.1007/s00340-025-08498-9

Qi Yunxuan, Zhang Sasa, Ye Zhibin, Li Xiaoran, Jiang Shu

引用次数: 0

Abstract

High-average-power, megawatt-peak-power solid-state lasers with high beam quality have garnered significant attention in the field of laser cleaning applications. This paper presents a 1064 nm diode-pumped Nd: YAG master oscillator power amplifier (MOPA) system employing a multi-mode stable resonator. The designed resonator exhibits minimal beam quality variation when operating in the second stability zone, combining excellent power scalability with remarkable multi-mode stability. A flexible beam delivery system incorporating a 400-µm-core-diameter optical fiber demonstrates exceptional performance, achieving coupling efficiency exceeding 95% at a maximum average output power of 701 W with 20 kHz repetition frequency. Furthermore, it reaches a peak power of 1.0 MW at 12 kHz repetition frequency while maintaining 588 W average power output. Experimental results confirm that this innovative design successfully balances high-power operation with beam quality preservation and efficient energy transmission.

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多模稳定，兆瓦峰值功率Nd: YAG激光器

高平均功率、峰值功率、高光束质量的固体激光器在激光清洗领域得到了广泛的关注。提出了一种采用多模稳定谐振腔的1064nm二极管泵浦Nd: YAG主振荡器功率放大器系统。设计的谐振器在第二稳定区工作时，具有最小的光束质量变化，结合了优异的功率可扩展性和卓越的多模稳定性。采用400 μ m芯径光纤的柔性光束传输系统表现出优异的性能，在20khz重复频率下，最大平均输出功率为701 W，耦合效率超过95%。此外，在12 kHz重复频率下，它的峰值功率达到1.0 MW，同时保持588 W的平均输出功率。实验结果证实，这种创新设计成功地平衡了高功率运行与光束质量保持和有效的能量传输。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics B 物理-光学

CiteScore

4.00

自引率

4.80%

发文量

202

审稿时长

3.0 months

期刊介绍： Features publication of experimental and theoretical investigations in applied physics Offers invited reviews in addition to regular papers Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more 94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field. In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.