In order to improve coupling efficiency and maximal laser transmission energy density, lasers with Gaussian distribution and flat-top distribution were utilized to couple to optical fibers with different surface roughness. The coupling efficiency and damage threshold of the fibers were studied. The experiment results showed that for Gaussian distribution laser beam, optical fibers with higher degree of smoothness would get better coupling efficiency, but would suffer more damage inside the fiber. But for flat-top distribution laser beam, optical fibers with higher degree of smoothness would get both higher coupling energy and efficiency.


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    Title :

    Optical fiber coupling of high-energy density pulsed lasers for laser ignition


    Contributors:
    Qin, Wenzhi (author) / Gao, Yuan (author) / Tang, Duo (author) / Ji, Xiangbo (author) / Li, Yong (author) / Wang, Zhihang (author) / Wang, Liang (author)

    Conference:

    Fifth International Symposium on Laser Interaction with Matter ; 2018 ; Changsha,China


    Published in:

    Proc. SPIE ; 11046


    Publication date :

    2019-03-29





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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