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17 May 2019 Investigation on pulsed laser damage resistance of high-absorption ceramic coatings
Zhen Yang, Xinmin Guo, Jianlong Zhang
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Proceedings Volume 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019); 111701K (2019) https://doi.org/10.1117/12.2533424
Event: Fourteenth National Conference on Laser Technology and Optoelectronics, 2019, Shanghai, China
Abstract
The damage mechanism and application between intense pulsed laser and non-metallic materials have been regarded as the research hotspot in recent years. The ceramic materials have the advantages of high temperature resistance, corrosion resistance, good chemical stability and high temperature mechanical properties, and insensitivity of bonding strength to high temperature. Therefore, ceramics are considered to be a good choice for laser-resistant materials. In this paper, the damage topography and anti-damage properties of high absorption ceramic coatings induced by pulsed laser at different energy densities are investigated from macro and micro levels. Then, combined with the experimental results of absorptivity, the lower limit of damage threshold (better than 8J/cm2) for the ceramic coatings is obtained. Finally, the main factors affecting the pulsed laser resistance of ceramic coatings are discussed. The results of this study can lay an important experimental foundation for the further research on the damage mechanism of intense pulsed laser and ceramic coating materials.
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Zhen Yang, Xinmin Guo, and Jianlong Zhang "Investigation on pulsed laser damage resistance of high-absorption ceramic coatings", Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111701K (17 May 2019); https://doi.org/10.1117/12.2533424
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KEYWORDS
Ceramics
Pulsed laser operation
Laser induced damage
Absorption
Laser damage threshold
Laser irradiation
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