Simulation study on laser damage threshold of optical window materials

Jixing Cai; Yunpeng Wang; Tianyu Cui; Yue Zhou; Jingxuan Qiu; Tianyi Cui

doi:10.1117/12.3016378

22 December 2023 Simulation study on laser damage threshold of optical window materials

Jixing Cai, Yunpeng Wang, Tianyu Cui, Yue Zhou, Jingxuan Qiu, Tianyi Cui

Proceedings Volume 12982, Pacific-Rim Laser Damage 2023: Optical Materials for High-Power Lasers; 129820P (2023) https://doi.org/10.1117/12.3016378
Event: SPIE/SIOM Pacific Rim Laser Damage, 2023, Shanghai, China

Abstract

Some key issues in the process of simulating millisecond laser damage to K₉ glass based on Multiphysics field simulation are analyzed through several aspects such as the establishment and meshing of the millisecond laser damage K₉ glass finite element model, loading of the pulsed laser, setting the initial conditions and boundary conditions. The finite element model of K₉ glass damaged by millisecond laser was established, and the temperature and stress distribution of K₉ glass irradiated by millisecond laser were numerically analyzed. The calculation results show that the spot radius and pulse frequency have a greater influence on the damage effect, the higher the frequency, the greater the thermal stress generated, and the stronger the damage effect; the larger the laser spot radius, the smaller the thermal stress generated, and the weaker the damage effect. Therefore, the laser damage threshold will be the spot radius, the pulse frequency of the regular change, that is, with the pulse frequency and spot radius increases, the damage threshold decreases.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jixing Cai, Yunpeng Wang, Tianyu Cui, Yue Zhou, Jingxuan Qiu, and Tianyi Cui "Simulation study on laser damage threshold of optical window materials", Proc. SPIE 12982, Pacific-Rim Laser Damage 2023: Optical Materials for High-Power Lasers, 129820P (22 December 2023); https://doi.org/10.1117/12.3016378

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KEYWORDS

Glasses

Laser damage threshold

Temperature distribution

Laser frequency

Laser glasses

Pulsed laser operation

Gaussian beams

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