Acta Optica Sinica, Volume. 40, Issue 20, 2014001(2020)

Analysis of Spatio-Temporal Characters of Thermal Effects of Optical Components in Laser System

Peng Hu* and Jianzhu Zhang
Author Affiliations
  • Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
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    Figures & Tables(12)
    Temperature increase distribution of Si reflective mirror. (a) Maximal temperature increase change with time; (b) radial distribution of surface temperature increase
    RMS of thermal aberration of Si reflective mirror change with time
    Temperature increase distribution of SiO2 window mirror at different moments. (a) Face absorption; (b) body absorption
    Thermal effect of SiO2 window mirror change with time. (a) Maximal temperature increase; (b) RMS of thermal aberration
    Adaptive correction simulation optical path of thermal effect. (a) Reflective mirrors Si; (b) window mirror SiO2
    RMS of thermal aberration under uniform intensity laser irradiation change with time
    Normalized peak intensity of far-field under uniform laser irradiation change with time. (a) AO open; (b) AO closed
    Laser intensity distribution in experiment
    Distribution of thermal aberration at 20 s. (a) Reflective mirrors Si; (b) window mirror SiO2
    RMS of thermal aberration under experimental laser irradiation change with time
    Normalized peak intensity of far-field under experimental laser irradiation change with time before and after correction. (a) AO open; (b) AO closed
    • Table 1. Physical parameters of the materials

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      Table 1. Physical parameters of the materials

      MaterialDensity /(kg·m-3)Heat capacity /(J·K-1·kg-1)Thermal conductivity /(W·m-1·K-1)Young's modulus /GPaPoisson ratioThermal expansion /K-1Thermal optic coefficient /K-1
      Si23296951531900.264.68×10-6-
      SiO222007531.4730.170.42×10-61.10×10-5
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    Peng Hu, Jianzhu Zhang. Analysis of Spatio-Temporal Characters of Thermal Effects of Optical Components in Laser System[J]. Acta Optica Sinica, 2020, 40(20): 2014001

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    Paper Information

    Category: Lasers and Laser Optics

    Received: May. 26, 2020

    Accepted: Jul. 10, 2020

    Published Online: Sep. 30, 2020

    The Author Email: Hu Peng (hu_peng@iapcm.ac.cn)

    DOI:10.3788/AOS202040.2014001

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