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Chinese Journal of Lasers, Volume. 48, Issue 1, 0101001(2021)

Three-dimensional Stress Fields of Laser Damaged Fused Silica

Shaowei Sun1, Naijie Qi1, Yan Kong1, Cheng Liu1,2, and Shumei Gao1、*
Author Affiliations
  • 1School of Science, Jiangnan University, Wu Xi, Jiangsu 214122, China
  • 2Key Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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    AbstractGet PDF(in Chinese)
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    Schematic of interaction between CO2 laser and fused silica glass. (a) Three-dimensional numerical model; (b) flow chart

    Fig. 1. Schematic of interaction between CO2 laser and fused silica glass. (a) Three-dimensional numerical model; (b) flow chart

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    Temperature distributions inside sample and initial surface damage morphologies under irradiation with different pulse energies. (a)(d) 1 J; (b)(e) 2.5 J; (c)(f) 5.3 J

    Fig. 2. Temperature distributions inside sample and initial surface damage morphologies under irradiation with different pulse energies. (a)(d) 1 J; (b)(e) 2.5 J; (c)(f) 5.3 J

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    Two- and three-dimensional stress distributions under different pulse energies. (a)(b) 1J; (c)(d) 2.5J; (e)(f) 5.3J

    Fig. 3. Two- and three-dimensional stress distributions under different pulse energies. (a)(b) 1J; (c)(d) 2.5J; (e)(f) 5.3J

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    Three-dimensional stress distributions under CO2 laser damage. (a)Experimental result; (b) simulation result

    Fig. 4. Three-dimensional stress distributions under CO2 laser damage. (a)Experimental result; (b) simulation result

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    Radial stress and hoop stress distributions at different sample depths under different laser energies. (a)(b) 1 J;(c)(d) 2.5 J; (e)(f)5.3 J

    Fig. 5. Radial stress and hoop stress distributions at different sample depths under different laser energies. (a)(b) 1 J;(c)(d) 2.5 J; (e)(f)5.3 J

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    • Table 1. Thermodynamic parameters of fused silica glass

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      Table 1. Thermodynamic parameters of fused silica glass

      ParameterValueUnit
      Density ρ2201kg·m-3
      Heat capacity C-120+4.56×T-7.38×10-3×T2+6.59×10-6×T3-3.05×10-9×T4+5.72×10-13×T5J·(kg·K)-1
      Thermal conductivity k1.12418+7.31454×10-4×T+4.41871×10-7×T2W·(m·K) -1
      Imaginary part of refractive index ni1.82×10-2+10.1×10-5×(T-273)
      Surface emissivity f0.8
      Young modulus E7.2×1010N·m-2
      Poisson ratio ν0.17
      Thermal expansion coefficient α5×10-7K-1
      Shear modulus G31.3GPa
      Strain reference temperature Tref293.15K
      Standard atmospheric pressure P0105Pa
      Molar mass M40×10-3kg·mol -1
      Perfect gas constant R8.31J·(K·mol)-1
      Latent heat of evaporation Ue425kJ·mol -1
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    Shaowei Sun, Naijie Qi, Yan Kong, Cheng Liu, Shumei Gao. Three-dimensional Stress Fields of Laser Damaged Fused Silica[J]. Chinese Journal of Lasers, 2021, 48(1): 0101001

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    Paper Information

    Category: laser devices and laser physics

    Received: Jun. 29, 2020

    Accepted: Aug. 21, 2020

    Published Online: Jan. 13, 2021

    The Author Email: Gao Shumei (gaosm@jiangnan.edu.cn)

    DOI:10.3788/CJL202148.0101001

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology