首页|260 fs,403 W coherently combined fiber laser with precise high-order dispersion management

260 fs,403 W coherently combined fiber laser with precise high-order dispersion management

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An ultrafast fiber laser system comprising two coherently combined amplifier channels is reported.Within this system,each channel incorporates a rod-type fiber power amplifier,with individual operations reaching approximately 233 W.The active-locking of these coherently combined channels,followed by compression using gratings,yields an output with a pulse energy of 504 μJ and an average power of 403 W.Exceptional stability is maintained,with a 0.3％root mean square(RMS)deviation and a beam quality factor M2＜1.2.Notably,precise dispersion management of the front-end seed light effectively compensates for the accumulated high-order dispersion in subsequent amplification stages.This strategic approach results in a significant reduction in the final output pulse duration for the coherently combined laser beam,reducing it from 488 to 260 fs after the gratings compressor,while concurrently enhancing the energy of the primary peak from 65％to 92％.

Fiber lasers amplifierPower scalingCoherent beam combinationDispersion compensation

Shuangxi Peng、Zhihao Wang、Feilong Hu、Zhengyan Li、Qingbin Zhang、Peixiang Lu

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Wuhan National Laboratory for Optoelectronics and School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China

School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China

Optics Valley Laboratory,Wuhan 430074,China

国家自然科学基金国家自然科学基金Innovation Project of Optics Valley LaboratoryMajor Program(JD)of Hubei ProvinceCross Research Support Program of Huazhong University of Science and Technology

921501061202100411934006OVL2021ZD001203BAA0152023JCYJ041

2024

10.1007/s12200-024-00107-5

光电子前沿(英文版)

光电子前沿(英文版)

CSTPCDEI
影响因子：0.049
ISSN：2095-2759
年,卷(期)：2024.17(1)
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