超快光纤激光相干合成中的脉冲压缩技术

李灿; 任博; 张嘉怡; 王涛; 唐振强; 贺志文; 周毅; 冷进勇; 周朴

doi:10.37188/CO.2025-0100

超快光纤激光相干合成中的脉冲压缩技术

doi: 10.37188/CO.2025-0100

cstr: 32171.14.CO.2025-0100

国防科技大学前沿交叉学科学院, 湖南长沙 410073

基金项目: 国家自然科学基金（No. 62475286，No. 62405374）；国防科技大学自主科研基金（No. ZZ005，No. JDZ-12，No. JDZ-27）

详细信息

作者简介:
李　灿（1987—），男，湖南益阳人，副研究员，2015年于华南理工大学获得工学博士学位，2015—2019年在香港大学从事博士后研究工作，主要从事超快光纤激光器、单频光纤激光器及相干合成的研究。E-mail：lc0616@163.com

周　朴（1984—），男，安徽安庆人，研究员，2009年于国防科技大学获得工学博士学位，现主要从事科研管理工作和光学工程及相关学科的科研、人才培养、教学和战略研究工作。E-mail：zhoupu203@163.com

中图分类号: TN248
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出版历程
- 收稿日期: 2025-07-26
- 修回日期: 2025-08-29
- 网络出版日期: 2026-01-20

Pulse compression techniques in ultrafast fiber laser coherent beam combination

College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

Funds: Supported by National Natural Science Foundation of China (No. 62475286, No. 62405374); Innovation Research Foundation of National University of Defense Technology (No. ZZ005, No. JDZ-12, No. JDZ-27)

More Information

Corresponding author: lc0616@163.com; zhoupu203@163.com

摘要

摘要:
近年来，超快光纤激光相干合成技术得到快速发展，成为超快超强激光平均功率提升的重要技术手段。然而，受到单路光纤放大器中光谱增益窄化以及高阶色散失配等因素影响，高功率超快光纤激光相干合成系统的输出脉冲宽度与块状固体激光系统相比通常较宽，导致其峰值功率提升严重受限。本文从超快光纤激光相干合成中脉冲压缩的视角，分别针对基于光纤啁啾脉冲放大的脉冲整形技术、基于光纤非线性光谱展宽的合成技术、以及基于部分光谱干涉的相干光谱合成技术三个方面进行了系统的梳理分析，并对超短脉冲光纤激光相干合成的后续发展进行了展望。
- 超快超强激光 /
- 光纤激光 /
- 相干合成 /
- 脉冲压缩
Abstract:
In recent years, ultrafast fiber laser coherent beam combination (CBC) has developed rapidly, becoming an important technical means for enhancing the average power of ultrafast and ultra-intense lasers. However, due to factors such as spectral gain narrowing in single-channel fiber amplifiers and high-order dispersion mismatch, the output pulse width of high-power ultrafast fiber laser CBC systems is significantly wider compared to that of bulk solid-state laser systems, severely limiting its peak power enhancement. From the perspective of pulse compression in ultrafast fiber laser coherent combining, this review systematically analyzes the following three aspects: pulse shaping technique based on fiber chirped pulse amplification, combining technique based on fiber nonlinear spectral broadening, and coherent spectral combining technique based on partial spectral interference. Additionally, a brief conclusion and outlook on the future development of ultra-short pulse fiber laser CBC is given at the end.
- ultrafast and ultra-intense lasers /
- fiber laser /
- coherent beam combination /
- pulse compression

HTML全文

图 1 基于光谱预整形与高阶色散预补偿的掺镱光纤CPA系统^[29]

Figure 1. The Yb-doped fiber CPA system based on spectral pre-shaping and high-order dispersion pre-compensation ^[29]

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图 2 多光子脉内干涉相位扫描结构示意图^[31]

Figure 2. Schematic diagram of the MIIPS ^[31]

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图 3 基于光谱预整形与相位补偿的高功率超快光纤激光相干合成系统^[34]

Figure 3. High-power ultrafast fiber laser coherent combining system based on spectral pre-shaping and phase compensation^[34]

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图 4 种子源光谱预整形（a）前、（b）后的合成输出光谱，图（b）中的橙色曲线为整形器的光谱透射函数^[34]

Figure 4. Combined output spectrum (a) before and (b) after pre-shaping the seed spectrum. The transmission function of the shaper is shown in (b) in orange^[34]

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图 5 基于超快激光非线性光纤放大的时空相干合成系统输出脉冲特性：左图为脉冲时域波形，其中插图为FROG轨迹；右图为相应的脉冲光谱^[49]

Figure 5. Output pulse characteristics of spatio-temporal coherent combining system based on ultrafast laser nonlinear fiber amplification. Left: temporal pulse profile of the 3.1 µJ pulse retrieved from FROG measurement, along with the FROG trace (inset). Right: corresponding spectrum^[49]

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图 6 基于多路光谱非线性展宽的超快光纤激光相干合成示意图^[50]

Figure 6. Schematic diagram of coherent combination of ultrafast fiber lasers based on multi-channel spectral nonlinear broadening (Broad. 1-N) with a common compressor^[50]

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图 7 基于3路光纤CPA相干光谱合成的输出脉冲特性。（a）单路及合成后光谱；（b）单路及合成后脉冲自相关曲线^[66]

Figure 7. Output pulse characteristics based on 3-channel fiber CPA coherent spectroscopy combining. (a) Measured spectra of the individual-channel and combined signals; (b) normalized autocorrelation traces for the individual-channel and combined signals^[66]

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图 8 超快光纤激光时空与光谱多维相干合成结构示意图^[70]

Figure 8. Schematic diagram of the ultrafast fiber lasers of spatio-temporal and spectral multi-dimensional coherent combining^[70]

下载: 全尺寸图片幻灯片

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