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Chinese Optics Letters, Volume. 17, Issue 5, 051601(2019)

Transient optical properties in fused silica measured by time-resolved high-power laser photometer

Zhen Cao1,2,3, Hongbo He1,3、*, Guohang Hu1,3、**, Yuanan Zhao1,3, Liujiang Yang1,3, and Jianda Shao1,3
Author Affiliations
  • 1Laboratory of Thin Film Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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    Schematic of the time-resolved photometer: λ/2, half-wave plate; λ/4, quarter-wave plate; D1/D2/D3/D4, photodiode detectors.

    Fig. 1. Schematic of the time-resolved photometer: λ/2, half-wave plate; λ/4, quarter-wave plate; D1/D2/D3/D4, photodiode detectors.

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    While the laser intensity was 37 GW/cm2, (a) the time-resolved signal variations and (b) the variations of the optical properties during the irradiation.

    Fig. 2. While the laser intensity was 37  GW/cm2, (a) the time-resolved signal variations and (b) the variations of the optical properties during the irradiation.

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    While the laser intensity was 118 GW/cm2, (a) the time-resolved signal variations and (b) the variations of the optical properties during the irradiation.

    Fig. 3. While the laser intensity was 118  GW/cm2, (a) the time-resolved signal variations and (b) the variations of the optical properties during the irradiation.

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    While the laser intensity was 232 GW/cm2, (a) the time-resolved signal variations and (b) the variations of the optical properties during the irradiation.

    Fig. 4. While the laser intensity was 232  GW/cm2, (a) the time-resolved signal variations and (b) the variations of the optical properties during the irradiation.

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    (a) Broadband emission spectrum associated with the damaged fused silica. (b) Plasma emission image integrated for 500 μs. (c) The optical microscopy image of the damage site.

    Fig. 5. (a) Broadband emission spectrum associated with the damaged fused silica. (b) Plasma emission image integrated for 500 μs. (c) The optical microscopy image of the damage site.

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    (a) Reflected energy and energy loss [with subtracted surface loss (∼8%) and transmitted energy from the incident energy] as a function of the laser intensity. (b) Reflectivity as a function of the laser intensity.

    Fig. 6. (a) Reflected energy and energy loss [with subtracted surface loss (∼8%) and transmitted energy from the incident energy] as a function of the laser intensity. (b) Reflectivity as a function of the laser intensity.

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    Threshold power for the increase of reflection at different laser intensities.

    Fig. 7. Threshold power for the increase of reflection at different laser intensities.

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    Zhen Cao, Hongbo He, Guohang Hu, Yuanan Zhao, Liujiang Yang, Jianda Shao. Transient optical properties in fused silica measured by time-resolved high-power laser photometer[J]. Chinese Optics Letters, 2019, 17(5): 051601

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    Paper Information

    Category: Materials

    Received: Nov. 22, 2018

    Accepted: Jan. 30, 2019

    Published Online: May. 13, 2019

    The Author Email: Hongbo He (hbhe@siom.ac.cn), Guohang Hu (huguohang@siom.ac.cn)

    DOI:10.3788/COL201917.051601

    Topics

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