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大芯径集束光纤强激光耦合装置设计

魏少强 李云飞 张钧尧 魏永杰

魏少强, 李云飞, 张钧尧, 魏永杰. 大芯径集束光纤强激光耦合装置设计[J]. 应用光学, 2023, 44(6): 1212-1218. doi: 10.5768/JAO202344.0610007
引用本文: 魏少强, 李云飞, 张钧尧, 魏永杰. 大芯径集束光纤强激光耦合装置设计[J]. 应用光学, 2023, 44(6): 1212-1218. doi: 10.5768/JAO202344.0610007
WEI Shaoqiang, LI Yunfei, ZHANG Junyao, WEI Yongjie. Design of strong laser coupling device for large core diameter bunched fiber[J]. Journal of Applied Optics, 2023, 44(6): 1212-1218. doi: 10.5768/JAO202344.0610007
Citation: WEI Shaoqiang, LI Yunfei, ZHANG Junyao, WEI Yongjie. Design of strong laser coupling device for large core diameter bunched fiber[J]. Journal of Applied Optics, 2023, 44(6): 1212-1218. doi: 10.5768/JAO202344.0610007

大芯径集束光纤强激光耦合装置设计

doi: 10.5768/JAO202344.0610007
基金项目: 天津市自然科学基金(18JCTPJC56600)
详细信息
    作者简介:

    魏少强(1987—),男,硕士,工程师,主要从事可调谐激光技术研究。Email:619549110@qq.com

  • 中图分类号: TN248

Design of strong laser coupling device for large core diameter bunched fiber

  • 摘要: 光纤传输是常用的激光传输方式,随着光纤制备工艺的提升,大芯径、大数值孔径的传能光纤被广泛应用于多模激光传输。高效的激光耦合是光纤稳定传输的前提,为实现宽波段、高功率密度的激光耦合,根据混合模类高斯光束传输变换特性和耦合装置初始参数,结合像差分析,设计了一套大芯径四合一集束光纤与单芯光纤之间的非球面镜耦合装置,并通过机械装置装调实验得到了最高60.6%的光纤耦合效率。搭配自研激光共振电离飞行时间质谱仪,实现了钕同位素三色三步光电离路径对应激光饱和功率密度的测量,验证了装置满足复色激光共振激发电离特定同位素的光谱实验需求。
  • 图  1  光纤耦合装置示意图

    Fig.  1  Schematic diagram of optical fiber coupling device

    图  2  几何光束聚焦模型

    Fig.  2  Focusing model of geometric beam

    图  3  Code V软件优化图

    Fig.  3  Code V software optimized diagram

    图  4  耦合装置机械调整结构

    Fig.  4  Structure diagram of mechanical adjustment for coupling device

    图  5  多步光电离路径的激光饱和功率密度扫描曲线

    Fig.  5  Laser saturation power density scanning curve of multi-step photoionization path

    表  1  非球面方程各系数值

    Table  1  Coefficient values of aspheric equation

    LensRKABCDEFGHJ
    Collimating lens31.201.05−8.32×e−61.07×e−81.68×e−91.01×e−11−5.29×e−14−2.41×e−15−3.66×e−17−1.64×e−191.15×e−20
    Focusing lens20.50−1.00−1.22×e−59.09×e−84.57×e−102.04×e−12−4.04×e−14−7.88×e−167.80×e−180.000.00
    下载: 导出CSV

    表  2  耦合装置实验结果

    Table  2  Experimental results of coupling device

    Wavelength
    /nm
    Laser
    power
    /W
    4-in-1
    fiber output
    power/W
    Single-core
    fiber output
    power/W
    Efficiency
    /%
    Input
    core/µm
    5671.171.106.5760.6365
    5671.000.94365
    5803.503.40550
    6416.005.40550
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-04-17
  • 修回日期:  2023-09-27
  • 网络出版日期:  2023-10-23
  • 刊出日期:  2023-11-22

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