Highly stable, 72 W average power, 76 MHz repetition rate femtosecond hybrid PCMA-FCPA Yb-fiber amplifier

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-05-27 DOI:10.1016/j.optlastec.2025.113261

Jokūbas Pimpė , Jonas Banys , Simona Armalytė , Jonas Jakutis Neto , Vygandas Jarutis , Audrius Dubietis , Julius Vengelis

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引用次数: 0

Abstract

We report on a high repetition rate, high average power femtosecond laser amplification system based on a Yb-doped polarization-maintaining double-clad rod-type large mode area photonic crystal fiber, employing a combination of pre-chirp managed amplification (PCMA) and fiber chirped pulse amplification (FCPA) techniques. The system operates at a 76 MHz pulse repetition rate and delivers nearly transform-limited 114 fs pulses with an average power of 72 W (82 W before compression), which exhibit Gaussian spatial intensity distribution with an excellent beam quality factor (M²) below 1.1 and a high polarization extinction ratio. Long-term stability tests performed over 70 hours revealed robust amplifier performance with a power fluctuation root mean square error of 0.16 %. The shortest compressed pulses with a duration of 64 fs in the self-phase modulation-assisted amplification regime were also demonstrated, without any risk of damage to the amplifier medium.

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高度稳定，平均功率72 W，重复频率76 MHz飞秒混合PCMA-FCPA yb光纤放大器

本文报道了一种基于掺镱保偏双包层棒型大模面积光子晶体光纤的高重复率、高平均功率飞秒激光放大系统，该系统采用预啁啾管理放大（PCMA）和光纤啁啾脉冲放大（FCPA）技术相结合。该系统工作在76 MHz的脉冲重复频率下，输出几乎变换限制的114 fs脉冲，平均功率为72 W（压缩前为82 W），具有良好的光束质量因子（M2）小于1.1和高偏振消光比的高斯空间强度分布。超过70小时的长期稳定性测试表明放大器性能稳健，功率波动均方根误差为0.16 %。在自相位调制辅助放大系统中，最短的压缩脉冲持续时间为64秒，并且没有损坏放大器介质的风险。

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

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems