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Electron Density Estimation and Fiber Fuse Simulation in Laser-Irradiated Bulk Glass

Received: 26 December 2021     Accepted: 11 January 2022     Published: 18 January 2022
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Abstract

To clarify the formation mechanism of periodic nanometer-size cavity structure of a borosilicate glass sample, the free electron density around the exit surface was investigated when it exposed to intense femtosecond laser radiation. The electron density near the edge of the crack on the surface was estimated to be 1020-1022 cm-3. From this result, the temperature of the irradiated heating area near the edge of the crack was estimated to reach at least about 6,000 K, which was sufficient for the initiation and propagation of the fiber fuse. In this way, periodic nanosized cavities could be formed by fiber fuse propagation starting near the edge of the crack on the exit surface. Next, fiber fuse propagation in the modified zone formed by continuous-wave laser irradiation in a silica glass sample was investigated theoretically by the explicit finite-difference method using the thermochemical SiOx production model. In the calculation, we assumed the glass to be in an atmosphere and that part (40 mm in length) of the modified zone was heated to a temperature of 2,923 K. The calculated velocities of fiber fuse propagation in the modified zone were in fair agreement with the experimental values observed at 0.514 and 1.064 mm.

Published in Journal of Electrical and Electronic Engineering (Volume 10, Issue 1)
DOI 10.11648/j.jeee.20221001.11
Page(s) 1-9
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Bulk Glass, Fiber Fuse Phenomenon, Finite-difference Technique

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  • APA Style

    Yoshito Shuto. (2022). Electron Density Estimation and Fiber Fuse Simulation in Laser-Irradiated Bulk Glass. Journal of Electrical and Electronic Engineering, 10(1), 1-9. https://doi.org/10.11648/j.jeee.20221001.11

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    ACS Style

    Yoshito Shuto. Electron Density Estimation and Fiber Fuse Simulation in Laser-Irradiated Bulk Glass. J. Electr. Electron. Eng. 2022, 10(1), 1-9. doi: 10.11648/j.jeee.20221001.11

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    AMA Style

    Yoshito Shuto. Electron Density Estimation and Fiber Fuse Simulation in Laser-Irradiated Bulk Glass. J Electr Electron Eng. 2022;10(1):1-9. doi: 10.11648/j.jeee.20221001.11

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  • @article{10.11648/j.jeee.20221001.11,
      author = {Yoshito Shuto},
      title = {Electron Density Estimation and Fiber Fuse Simulation in Laser-Irradiated Bulk Glass},
      journal = {Journal of Electrical and Electronic Engineering},
      volume = {10},
      number = {1},
      pages = {1-9},
      doi = {10.11648/j.jeee.20221001.11},
      url = {https://doi.org/10.11648/j.jeee.20221001.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jeee.20221001.11},
      abstract = {To clarify the formation mechanism of periodic nanometer-size cavity structure of a borosilicate glass sample, the free electron density around the exit surface was investigated when it exposed to intense femtosecond laser radiation. The electron density near the edge of the crack on the surface was estimated to be 1020-1022 cm-3. From this result, the temperature of the irradiated heating area near the edge of the crack was estimated to reach at least about 6,000 K, which was sufficient for the initiation and propagation of the fiber fuse. In this way, periodic nanosized cavities could be formed by fiber fuse propagation starting near the edge of the crack on the exit surface. Next, fiber fuse propagation in the modified zone formed by continuous-wave laser irradiation in a silica glass sample was investigated theoretically by the explicit finite-difference method using the thermochemical SiOx production model. In the calculation, we assumed the glass to be in an atmosphere and that part (40 mm in length) of the modified zone was heated to a temperature of 2,923 K. The calculated velocities of fiber fuse propagation in the modified zone were in fair agreement with the experimental values observed at 0.514 and 1.064 mm.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Electron Density Estimation and Fiber Fuse Simulation in Laser-Irradiated Bulk Glass
    AU  - Yoshito Shuto
    Y1  - 2022/01/18
    PY  - 2022
    N1  - https://doi.org/10.11648/j.jeee.20221001.11
    DO  - 10.11648/j.jeee.20221001.11
    T2  - Journal of Electrical and Electronic Engineering
    JF  - Journal of Electrical and Electronic Engineering
    JO  - Journal of Electrical and Electronic Engineering
    SP  - 1
    EP  - 9
    PB  - Science Publishing Group
    SN  - 2329-1605
    UR  - https://doi.org/10.11648/j.jeee.20221001.11
    AB  - To clarify the formation mechanism of periodic nanometer-size cavity structure of a borosilicate glass sample, the free electron density around the exit surface was investigated when it exposed to intense femtosecond laser radiation. The electron density near the edge of the crack on the surface was estimated to be 1020-1022 cm-3. From this result, the temperature of the irradiated heating area near the edge of the crack was estimated to reach at least about 6,000 K, which was sufficient for the initiation and propagation of the fiber fuse. In this way, periodic nanosized cavities could be formed by fiber fuse propagation starting near the edge of the crack on the exit surface. Next, fiber fuse propagation in the modified zone formed by continuous-wave laser irradiation in a silica glass sample was investigated theoretically by the explicit finite-difference method using the thermochemical SiOx production model. In the calculation, we assumed the glass to be in an atmosphere and that part (40 mm in length) of the modified zone was heated to a temperature of 2,923 K. The calculated velocities of fiber fuse propagation in the modified zone were in fair agreement with the experimental values observed at 0.514 and 1.064 mm.
    VL  - 10
    IS  - 1
    ER  - 

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