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Proceedings Paper

Characterization of laser induced damage of HR coatings with picosecond pulses
Author(s): Cheng Li; Yuan'an Zhao; Yun Cui; Yueliang Wang; Xiaocong Peng; Chong Shan; Meiping Zhu; Jianguo Wang; Jianda Shao
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Paper Abstract

The effect of protective layer on the picosecond laser-induced damage behaviors of HfO2/SiO2 high-reflective (HR) coatings are explored. Two kinds of 1064nm HR coatings with and without protective layer are deposited by electron beam evaporation. Laser-induced damage tests are conducted with 1064nm, 30ps S-polarized and P-polarized pulses with different angle of incidence (AOI) to make the electric fields intensity in the HR coatings discrepantly. Damage morphology and cross section of damage sites were characterized by scanning electron microscope (SEM) and focused ion beam (FIB), respectively. It is found that SiO2 protective layer have a certain degree of improvement on laser induced damage threshold (LIDT) for every AOIs. The onset damage initiated very near to the Max peak of e-field, after which forms ripple-like pits. The damage morphology presents as layer delamination at high fluence. The Laser damage resistance is correspond with the maximum E-intensity in the coating stacks.

Paper Details

Date Published: 13 November 2017
PDF: 8 pages
Proc. SPIE 10447, Laser-Induced Damage in Optical Materials 2017, 104470Z (13 November 2017);
Show Author Affiliations
Cheng Li, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Yuan'an Zhao, Shanghai Institute of Optics and Fine Mechanics (China)
Yun Cui, Shanghai Institute of Optics and Fine Mechanics (China)
Yueliang Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Xiaocong Peng, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Chong Shan, Shanghai Institute of Optics and Fine Mechanics (China)
Changchun Univ. of Science and Technology (China)
Meiping Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Jianguo Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Jianda Shao, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 10447:
Laser-Induced Damage in Optical Materials 2017
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; MJ Soileau, Editor(s)

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