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Femtosecond laser Bessel beam welding of transparent to non-transparent materials with large focal-position tolerant zone
Zhang, Guodong1,2; Stoian, Razvan3; Zhao, Wei1; Cheng, Guanghua1,3
Department瞬态光学技术国家重点实验室
2018-01-22
Source PublicationOPTICS EXPRESS
ISSN1094-4087
Volume26Issue:2Pages:917-926
Contribution Rank1
Abstract

It is known that ultrashort laser welding of materials requires an accurate laser beam focusing and positioning onto the samples interface. This puts forward severe challenges for controlling the focus position particularly considering that the tightly focused Gaussian beam has a short, micron-sized Rayleigh range. Here we propose a large-focal-depth welding method to bond materials by using non-diffractive femtosecond laser Bessel beams. A zero-order Bessel beam is produced by an axicon and directly imaged on the interface between silicon and borosilicate glass to write welding lines, ensuring a non-diffractive length in the 500 mu m range and micron-sized FWHM diameter. The focal-position tolerant zone for effective welding increases thus many-fold compared to traditional Gaussian beam welding. The shear joining strength of the sample welded by this method could be as high as 16.5 MPa. The Raman spectrum and element distribution analyses within the cross section of welding line reveal that substance mixing has occurred during laser irradiation, which is considered as the main reason for femtosecond laser induced bonding. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

 

DOI10.1364/OE.26.000917
Indexed BySCI ; EI
Language英语
WOS IDWOS:000422935900050
EI Accession Number20180404679698
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/30796
Collection瞬态光学技术国家重点实验室
Affiliation1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.Univ Jean Monnet, Univ Lyon, CNRS, Lab Hubert Curien,UMR 5516, F-42000 St Etienne, France
Recommended Citation
GB/T 7714
Zhang, Guodong,Stoian, Razvan,Zhao, Wei,et al. Femtosecond laser Bessel beam welding of transparent to non-transparent materials with large focal-position tolerant zone[J]. OPTICS EXPRESS,2018,26(2):917-926.
APA Zhang, Guodong,Stoian, Razvan,Zhao, Wei,&Cheng, Guanghua.(2018).Femtosecond laser Bessel beam welding of transparent to non-transparent materials with large focal-position tolerant zone.OPTICS EXPRESS,26(2),917-926.
MLA Zhang, Guodong,et al."Femtosecond laser Bessel beam welding of transparent to non-transparent materials with large focal-position tolerant zone".OPTICS EXPRESS 26.2(2018):917-926.
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