Investigation on picosecond laser-induced damage in HfO2/SiO2 high-reflective coatings

doi:10.1016/j.optlastec.2018.04.028

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	Investigation on picosecond laser-induced damage in HfO2/SiO2 high-reflective coatings
	Li, C.; Zhao, Y. A.; Cui, Y.; Wang, Y. L.; Peng, X. C.; Shan, C.; Zhu, M. P.; Wang, J. G.; Shao, J. D.
刊名	Optics and Laser Technology
	2018
卷号	106 页码:372-377
关键词	High-reflective coating Laser-induced damage Protective layer Picosecond pulse Electric field distribution induced breakdown nm sio2 Optics Physics
ISSN号	0030-3992
DOI	10.1016/j.optlastec.2018.04.028
英文摘要	We investigate the influence of a protective layer on the picosecond laser-induced damage in HfO2/SiO2 high-reflective (HR) coatings. Two types of 1064-nm HR coatings, with and without a SiO2 protective layer, are deposited using electron beam evaporation. Laser-induced damage tests are operated with 1064-nm, 30-ps laser pulses in one-on-one mode. Five different angles of incidence (AOIs) are considered in the tests for both coatings, in order to modulate the electric field (E-field) intensity in the HR coatings. The damage morphologies and cross-sections of the damage sites are characterized using scanning electron microscope (SEM) and focused ion beam (FIB), respectively. Experimental results show that the SiO2 protective layer slightly improves the laser-induced damage threshold (LIDT) of the HR coatings for all AOI values. The damage morphology contains high-density micrometer-scale pits and layer delaminations, at low and high fluences, respectively. The cross-sections of the damage sites and LLDTs for different AOIs are compared with corresponding E-field distributions. For both coatings, the damage is initiated near the peak of the E-field. A negative linear relationship is observed between the LIDT and corresponding maximum E-field intensity for both coatings. (C) 2018 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/61040]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Li, C.,Zhao, Y. A.,Cui, Y.,et al. Investigation on picosecond laser-induced damage in HfO2/SiO2 high-reflective coatings[J]. Optics and Laser Technology,2018,106:372-377.
APA	Li, C..,Zhao, Y. A..,Cui, Y..,Wang, Y. L..,Peng, X. C..,...&Shao, J. D..(2018).Investigation on picosecond laser-induced damage in HfO2/SiO2 high-reflective coatings.Optics and Laser Technology,106,372-377.
MLA	Li, C.,et al."Investigation on picosecond laser-induced damage in HfO2/SiO2 high-reflective coatings".Optics and Laser Technology 106(2018):372-377.