Laser transmission welding of transparent polymers based on femtosecond laser surface pretreatment

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-02-24 DOI:10.1016/j.optlastec.2025.112669

Dongyang Wang , Kaige Liu , Jianpang Zhai , Shuangchen Ruan , Yan Kang , Qingyang Wu

{"title":"Laser transmission welding of transparent polymers based on femtosecond laser surface pretreatment","authors":"Dongyang Wang , Kaige Liu , Jianpang Zhai , Shuangchen Ruan , Yan Kang , Qingyang Wu","doi":"10.1016/j.optlastec.2025.112669","DOIUrl":null,"url":null,"abstract":"<div><div>Laser transmission welding (LTW) technology has garnered widespread attention in polymer welding due to its unique advantages. Among the challenges in LTW research of polymers, achieving welds between two transparent polymers without using absorbers is one of the most difficult issues. To date, there have been no reports of effective welding of transparent polymers using near-infrared (NIR) lasers without the use of absorbers, because transparent polymers have low absorption rates for commonly used NIR lasers, resulting in insufficient absorption of laser energy to achieve effective welding. This study presents a femtosecond laser surface pretreatment approach that modifies polymer surface roughness to enhance absorption rates. The effects of various ablation parameters on the roughness and laser absorption of polycarbonate (PC) samples were investigated. Effective welding of PC/PVC was achieved using both NIR (808 nm) and mid-infrared (1940 nm) lasers, and the shear strength of the welded joints was tested. The applicability of this approach was further validated across multiple transparent polymer sets. By enabling NIR laser transmission welding without absorbers, this method offers significant potential for applications in the biomedical, food, and medical industries.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"186 ","pages":"Article 112669"},"PeriodicalIF":4.6000,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Laser Technology","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030399225002579","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}

引用次数: 0

Abstract

Laser transmission welding (LTW) technology has garnered widespread attention in polymer welding due to its unique advantages. Among the challenges in LTW research of polymers, achieving welds between two transparent polymers without using absorbers is one of the most difficult issues. To date, there have been no reports of effective welding of transparent polymers using near-infrared (NIR) lasers without the use of absorbers, because transparent polymers have low absorption rates for commonly used NIR lasers, resulting in insufficient absorption of laser energy to achieve effective welding. This study presents a femtosecond laser surface pretreatment approach that modifies polymer surface roughness to enhance absorption rates. The effects of various ablation parameters on the roughness and laser absorption of polycarbonate (PC) samples were investigated. Effective welding of PC/PVC was achieved using both NIR (808 nm) and mid-infrared (1940 nm) lasers, and the shear strength of the welded joints was tested. The applicability of this approach was further validated across multiple transparent polymer sets. By enabling NIR laser transmission welding without absorbers, this method offers significant potential for applications in the biomedical, food, and medical industries.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems