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High energy femtosecond laser micromachining with hollow core photonic crystal fiber delivery
Li, Feng; Yang, Zhi; Lv, Zhiguo; Wang, Yishan; Li, Qianglong; Wei, Yufeng; Yang, Yang; Yang, Xiaojun; Zhao, Wei
Department瞬态光学技术国家重点实验室
2019-10
Source PublicationOptik
ISSN00304026
Volume194
Contribution Rank1
Abstract

In this paper, we demonstrate a new way to deliver the high energy femtosecond laser with Kagome-type hollow core photonic crystal fiber for micromachining compared to the traditional free space laser delivery. To achieve the high coupling efficiency and overcome the nonlinear effect in the delivery, the coupling system is optimized and the fiber is vacuum pumped to less than 5 mbar. High delivery efficiency more than 90% is achieved. To our best knowledge, this is the highest efficiency of femtosecond laser delivered by Kagome type hollow core fiber. With vacuum pump, we lowered the nonlinear effect and make the laser beam have good beam profile and slightly pulse duration change even in the delivery of laser with the pulse energy of 100 μJ, average power of 20 W, and pulse duration of 234 fs. The whole system is also used to make micromachining of aluminum and stainless steel with good processing quality. © 2019 Elsevier GmbH

DOI10.1016/j.ijleo.2019.163093
Indexed ByEI
Language英语
PublisherElsevier GmbH
EI Accession Number20193007220859
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/31608
Collection瞬态光学技术国家重点实验室
Corresponding AuthorLi, Feng
AffiliationDepartment of State Key Laboratory of Transient Optics and Photonics, Xi'an institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China
Recommended Citation
GB/T 7714
Li, Feng,Yang, Zhi,Lv, Zhiguo,et al. High energy femtosecond laser micromachining with hollow core photonic crystal fiber delivery[J]. Optik,2019,194.
APA Li, Feng.,Yang, Zhi.,Lv, Zhiguo.,Wang, Yishan.,Li, Qianglong.,...&Zhao, Wei.(2019).High energy femtosecond laser micromachining with hollow core photonic crystal fiber delivery.Optik,194.
MLA Li, Feng,et al."High energy femtosecond laser micromachining with hollow core photonic crystal fiber delivery".Optik 194(2019).
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