
Proceedings Paper
Damage initiation and growth in multilayer dielectric films at 1064 nmFormat | Member Price | Non-Member Price |
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Paper Abstract
The lifetime of optics in high power laser system is typically limited by both laser-initiated damage and the subsequent
growth of laser-initiated damage sites. The single- and multiple-shot irradiations for HfO2 /SiO2 high-reflective coatings,
deposited from hafnia and silica at 1064nm in nanosecond were investigated. It was found that when shot number
increased, the possibility of damage growth increased as well. The relationship between field distribution and damage
morphologies and inner structures was discussed to reveal mechanism of damage initiation. Additionally, the damage
morphologies under different laser fluence and shot numbers were characterized to discuss the damage growth
mechanism upon subsequent pulses. The tested results illustrated the absorbers which induced damages were random
distribution, and the second highest peak of field intensity at the fourth interface was high enough to induce the
micron-sized damage pits. It was found that defect density had a significant impact on the damage site whether growing
or not upon subsequent laser pulses. Additionally, the growth resulted in delamination, and in turn delamination
accelerated damage growth, finally the catastrophic damage happened.
Paper Details
Date Published: 9 July 2013
PDF: 9 pages
Proc. SPIE 8786, Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers, 87861X (9 July 2013); doi: 10.1117/12.2020151
Published in SPIE Proceedings Vol. 8786:
Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers
Jianda Shao; Takahisa Jitsuno; Wolfgang Rudolph, Editor(s)
PDF: 9 pages
Proc. SPIE 8786, Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers, 87861X (9 July 2013); doi: 10.1117/12.2020151
Show Author Affiliations
Wenwen Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Chaoyang Wei, Shanghai Institute of Optics and Fine Mechanics (China)
Dawei Li, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Chaoyang Wei, Shanghai Institute of Optics and Fine Mechanics (China)
Dawei Li, Shanghai Institute of Optics and Fine Mechanics (China)
Jian Sun, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Kui Yi, Shanghai Institute of Optics and Fine Mechanics (China)
Jianda Shao, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Kui Yi, Shanghai Institute of Optics and Fine Mechanics (China)
Jianda Shao, Shanghai Institute of Optics and Fine Mechanics (China)
Published in SPIE Proceedings Vol. 8786:
Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers
Jianda Shao; Takahisa Jitsuno; Wolfgang Rudolph, Editor(s)
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