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Optical transmission during mid-infrared femtosecond laser pulses ablation of fused silica

机译：熔融石英中红外飞​​秒激光脉冲烧蚀过程中的光传输

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摘要

We report on the optical transmission of near-infrared (1.8 mu m) femtosecond laser pulses during multiple pulses laser ablation of fused silica surface. In addition to the previously reported ciliary white light phenomenon (Phys. Rev. Lett. 110, 097601 (2013)), two new optical transmission phenomena were observed for relatively low energy laser pulses. We systemically examined the damage morphologies of the ablation site as a function of laser pulse energy and laser shot number. Laser induced periodic surface structures (LIPSS) with different periods and orientations were observed for different pulse energy regimes. Comparison of the damage morphologies and the optical transmission reveals that the two new optical transmission phenomena origin from the refraction of the incident near-infrared pulses on the LIPSS covered damage surface followed by nonlinear propagation of the beamlets and even filamentation if the laser energy was high enough. We found that the interference of the neighboring white light emissions gives rise to radially orientated optical fringes. Based on this observation, we proposed another interpretation for the ciliary white light phenomenon.
机译：我们报告了熔融石英表面的多脉冲激光烧蚀过程中的近红外（1.8μm）飞秒激光脉冲的光传输。除了先前报道的睫状白光现象（Phys。Rev. Lett。110，097601（2013））之外，对于能量相对较低的激光脉冲，还观察到两种新的光学透射现象。我们系统地检查了作为激光脉冲能量和激光发射次数的函数的消融部位的损伤形态。对于不同的脉冲能量方案，观察到具有不同周期和取向的激光诱导的周期性表面结构（LIPSS）。损伤形态和光传输的比较表明，这两个新的光传输现象源自LIPSS覆盖的损伤表面上入射近红外脉冲的折射，然后是小束的非线性传播，如果激光能量很高，甚至会产生细丝足够。我们发现相邻白光发射的干扰产生了径向取向的光学条纹。基于此观察结果，我们对睫状白光现象提出了另一种解释。

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  • 来源
    《Applied Surface Science》 |2019年第31期|506-515|共10页
  • 作者

    Liang Qingqing; Zhong Yue; Fan Zhengquan; Diao Hanhu; Jukna Vytautas; Chen Wanghua; Houardg Aurelien; Zeng Zhinan; Li Ruxin; Liu Yi;

  • 作者单位

    Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, Minist Educ, Engn Res Ctr Opt Instrument & Syst, 516 Jungong Rd, Shanghai, Peoples R China;

    Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China;

    Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, Minist Educ, Engn Res Ctr Opt Instrument & Syst, 516 Jungong Rd, Shanghai, Peoples R China;

    Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China;

    Vilnius Univ, Laser Res Ctr, Sauletekio Ave 10, LT-10223 Vilnius, Lithuania;

    Ningbo Univ, Fac Sci, Ningbo 315211, Zhejiang, Peoples R China|Univ Paris Saclay, Ecole polytech, CNRS, LPICM, F-91128 Palaiseau, France;

    Ecole Polytech, CNRS, ENSTA Paristech, Lab Opt Appl, 828 Blvd Marechaux, F-91128 Palaiseau, France;

    Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China;

    Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China;

    Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, Minist Educ, Engn Res Ctr Opt Instrument & Syst, 516 Jungong Rd, Shanghai, Peoples R China|Ecole Polytech, CNRS, ENSTA Paristech, Lab Opt Appl, 828 Blvd Marechaux, F-91128 Palaiseau, France;

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  • 正文语种 eng
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  • 关键词

    Laser ablation; Femtosecond pulse; White-light; Laser-induced periodic surface structures; Mid-infrared laser pulse;

    机译：激光烧蚀;飞秒脉冲;白光;激光诱导的周期性表面结构;中红外激光脉冲;

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