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基于多纵模振荡种子源的高功率窄线宽光纤激光器关键技术分析及研究现状

孙仕豪 郑也 于淼 李思源 曹镱 王军龙 王学锋

孙仕豪, 郑也, 于淼, 李思源, 曹镱, 王军龙, 王学锋. 基于多纵模振荡种子源的高功率窄线宽光纤激光器关键技术分析及研究现状[J]. 中国光学(中英文), 2024, 17(1): 38-51. doi: 10.37188/CO.2023-0074
引用本文: 孙仕豪, 郑也, 于淼, 李思源, 曹镱, 王军龙, 王学锋. 基于多纵模振荡种子源的高功率窄线宽光纤激光器关键技术分析及研究现状[J]. 中国光学(中英文), 2024, 17(1): 38-51. doi: 10.37188/CO.2023-0074
SUN Shi-hao, ZHENG Ye, YU Miao, LI Si-yuan, CAO Yi, WANG Jun-long, WANG Xue-feng. Key technology analysis and research progress of high-power narrow linewidth fiber laser based on the multi-longitudinal-mode oscillator seed source[J]. Chinese Optics, 2024, 17(1): 38-51. doi: 10.37188/CO.2023-0074
Citation: SUN Shi-hao, ZHENG Ye, YU Miao, LI Si-yuan, CAO Yi, WANG Jun-long, WANG Xue-feng. Key technology analysis and research progress of high-power narrow linewidth fiber laser based on the multi-longitudinal-mode oscillator seed source[J]. Chinese Optics, 2024, 17(1): 38-51. doi: 10.37188/CO.2023-0074

基于多纵模振荡种子源的高功率窄线宽光纤激光器关键技术分析及研究现状

doi: 10.37188/CO.2023-0074
基金项目: 国家自然科学基金(No. U20B2058)
详细信息
    作者简介:

    孙仕豪(1991—),男,山西运城人,博士,工程师,2013年于北京邮电大学获得学士学位;2013—2016年,在中国联通天津市分公司工作;2022年于北京邮电大学获得博士学位;同年,在北京航天控制仪器研究所参加工作,主要从事窄线宽光纤激光器和抗辐照光纤激光器技术等方面的研究。E-mail:sunshihaojob@163.com

    郑 也(1989—),男,黑龙江哈尔滨人,博士,高级工程师,2012年于哈尔滨工业大学获得学士学位;2017年于中国科学院上海光学精密机械研究所获得博士学位;同年,在北京航天控制仪器研究所参加工作,研究方向包括高功率光纤激光器、高功率组束光纤激光器和窄线宽光纤激光器等。E-mail:zhengye.no1@163.com

    王军龙(1975—),男,吉林抚松人,博士,研究员,1998年于长春理工大学获得学士学位;2011年于中国运载火箭技术研究院获得博士学位;主持了多项光纤激光器,激光与材料作用机理等创新研发项目。研究方向包括高功率光纤激光器和光谱组束激光器等。E-mail:wjl_casc@126.com

    王学锋(1974—),男,山西阳城人,博士,研究员,1997年于武汉测绘科技大学获得学士学位;2002年于中国科学院上海光学精密机械研究所获得博士学位;已在航天领域工作了20多年,于2013年获得中国航天基金会奖;领导了多项科学研究项目,包括高功率光纤激光器、特种光纤应用、光纤传感和光纤陀螺仪等。E-mail:xuefeng_wang@sina.cn

  • 中图分类号: TN248

Key technology analysis and research progress of high-power narrow linewidth fiber laser based on the multi-longitudinal-mode oscillator seed source

Funds: Supported by National Natural Science Foundation of China (No. U20B2058)
More Information
  • 摘要:

    基于多纵模振荡种子源的窄线宽光纤激光器具有光路简单、结构紧凑、可靠性高、成本低等特点,在实际工程应用以及在空间受限的载荷平台上有着显著优势,是高功率光谱合成的理想子束模块。受自脉冲效应的影响,多纵模振荡种子源的时域特性较差,导致放大过程中会产生较强的光谱展宽与受激拉曼散射效应。这限制了其输出功率的进一步提升并降低了其光谱纯度。本文首先介绍了4种常见的窄线宽种子源,并重点分析了多纵模振荡种子源中自脉冲效应产生的机理及抑制方法,对优化多纵模振荡种子源和放大器的关键技术进行了详细介绍,归纳总结了近几年的技术突破与研究成果,对未来的发展方向进行了展望分析。本文研究对基于多纵模振荡种子源的窄线宽激光器的功率提升和光谱优化提供一定思路。

     

  • 图 1  不同窄线宽种子源示意图。(a)单频激光相位调制种子源;(b)超荧光光源窄带滤波种子源;(c)随机光纤激光器种子源;(d)多纵模振荡种子源

    Figure 1.  Schematic diagram of different narrow-linewidth seed sources. (a) Phase modulated single frequency laser seed source; (b) narrow-band filtered superfluorescent seed source; (c) random fiber laser seed source; (d) narrow-linewidth multi-longitudinal-mode oscillator seed source

    图 2  不同功率和时间尺度上的自脉冲时域信号。(a)在微秒尺度上的激光阈值自脉冲;(b)在十纳秒尺度上的激光阈值自脉冲;(c)在微秒尺度上的较高功率激光自脉冲;(d)在十纳秒尺度上的较高功率激光自脉冲[35]

    Figure 2.  Time-domain signals of self-pulse at different time scales and powers. (a) Laser threshold self-pulse at the scale of microsecond; (b) laser threshold self-pulse at the scale of ten nanoseconds; (c) laser self-pulse with higher power at the scale of microsecond; (d) laser self-pulse with higher power at the scale of ten nanoseconds[35]

    图 3  不同带宽输出耦合光栅构成的振荡腔时域测试结果[35]

    Figure 3.  Test results of oscillating cavity constructed by different bandwidths OC-FBGs in time domain [35]

    图 4  不同腔长振荡器在输出功率为18.25 W时不同尺度下的时序特性。(a)微秒尺度下的时序特性;(b)纳秒尺度下的时序特性[35]

    Figure 4.  Time-domain characteristic of oscillator with different cavity lengths at different scale when the output power is 18.25 W. (a) At microsecond scale; (b) at nanosecond scale[35]

    图 5  (a)不含有和(b)含有空间耦合F-P腔抑制自脉冲实验示意图

    Figure 5.  Schematic diagram of self-pulse suppression experiment (a) without and (b) with spatially coupled F-P cavity

    图 6  全光纤化的复合振荡腔示意图

    Figure 6.  Schematic diagram of complex oscillator cavity with all-fiber configuration

    图 7  基于振荡腔种子级的高功率激光光谱。(a)对单振荡腔种子光进行放大后的激光光谱;(b)对复合振荡腔种子光进行放大后的激光光谱[35]

    Figure 7.  High power laser spectra based on different oscillator cavities. (a) Laser spectra after amplification of single oscillator cavity; (b) laser spectra after amplification of complex oscillator cavity[35]

    图 8  引入CTFBG前后1 kW窄线宽激光的SRS抑制情况

    Figure 8.  SRS suppression of 1 kW narrow line width fiber laser with and without CTFBG

    图 9  (a)常规腔型种子源、(b)复合腔种子源、(c)加长复合腔种子源、(d)放大级光路示意图[51]

    Figure 9.  Schematic diagrams of optical paths of (a) ordinary oscillator cavity seed source, (b) complex oscillator cavity seed source, (c) long complex oscillator cavity seed source, and (d) amplifier stage[51]

    图 10  基于复合腔振荡种子源的窄线宽单级MOPA结构激光系统示意图[52]

    Figure 10.  Schematic diagram of narrow-linewidth single stage MOPA configuration laser system based on complex cavity oscillator seed source[52]

    图 11  1045 nm窄线宽光纤激光器光路示意图

    Figure 11.  Schematic diagram of optical path of 1045-nm narrow-linewidth fiber laser

    图 12  3.3 kW窄线宽光纤激光器光路示意图

    Figure 12.  Schematic diagram of the optical path of a 3.3 kW narrow-linewidth fiber laser

    图 13  “种子-放大级共享泵浦”结构示意图

    Figure 13.  Structural diagram of the “seed-amplifier sharing pump”

    图 14  不同泵浦方式的线宽变化规律

    Figure 14.  The variation of line width under different pumping methods

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出版历程
  • 收稿日期:  2023-04-27
  • 修回日期:  2023-05-18
  • 网络出版日期:  2023-09-22

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