Research on the single and multiple pulse laser damage performance of UV anti-reflection coatings

Kesheng Guo; Yanzhi Wang; Ruiyi Chen; Meiping Zhu; Kui Yi; Hongbo He; Jianda Shao

doi:10.1117/12.2539762

8 July 2019 Research on the single and multiple pulse laser damage performance of UV anti-reflection coatings

Kesheng Guo, Yanzhi Wang, Ruiyi Chen, Meiping Zhu, Kui Yi, Hongbo He, Jianda Shao

Proceedings Volume 11063, Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers; 110630D (2019) https://doi.org/10.1117/12.2539762
Event: Pacific Rim Laser Damage 2019 and Thin Film Physics and Applications 2019, 2019, Qingdao, China

Abstract

Multiple-pulse laser-induced damage is an important topic for many applications of optical coatings. In this work, we study the performance of multiple and single pulse laser-induced damage of anti-reflection (AR) coatings with ns-pulsed laser irradiation at a wavelength of 355 nm. LIDT of AR coatings changes little under multiple and single pulse irradiation, around 15 J/cm². The damage probability curve of multiple pulse is extremely steep. The defect density in the irradiated area is quite high, a large amount of pin-point or cone-shaped pits are observed. The absorption coefficient and defect density increase a lot under multiple pulse irradiation. Material modification of the precursor under multiple pulse is thought as the main reason of high absorption coefficient. Once damage occurs, the damage increases fast and soon grows catastrophic damage. The initial damage morphologies are similar, pin-point or cone-shaped pits, which indicates the initial precursor or defect of multiple and single pulse are the same.

Citation Download Citation

Kesheng Guo, Yanzhi Wang, Ruiyi Chen, Meiping Zhu, Kui Yi, Hongbo He, and Jianda Shao "Research on the single and multiple pulse laser damage performance of UV anti-reflection coatings", Proc. SPIE 11063, Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers, 110630D (8 July 2019); https://doi.org/10.1117/12.2539762

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