Ultrashort-pulsed lasers are ideal for material processing by welding, marking, and cutting. Scanning systems are crucial for large substrates. We introduce a novel UV line structuring method using deformable mirror technology and freeform optics. This approach aims to improve processing times on large substrates, especially for M12 solar wafer processing. By using a freeform lens and a Zwobbel deformable mirror, we achieve extended processing fields and high scan frequencies. The paper explores optical designs, their robust optomechanical implementation for prototyping, and setup characterization.
{"title":"Ultraviolet line structuring of large solar wafers","authors":"Henrike Schlutow, Ulrike Fuchs, Claudia Reinlein","doi":"10.1002/phvs.202400035","DOIUrl":"https://doi.org/10.1002/phvs.202400035","url":null,"abstract":"<p>Ultrashort-pulsed lasers are ideal for material processing by welding, marking, and cutting. Scanning systems are crucial for large substrates. We introduce a novel UV line structuring method using deformable mirror technology and freeform optics. This approach aims to improve processing times on large substrates, especially for M12 solar wafer processing. By using a freeform lens and a Zwobbel deformable mirror, we achieve extended processing fields and high scan frequencies. The paper explores optical designs, their robust optomechanical implementation for prototyping, and setup characterization.</p>","PeriodicalId":101021,"journal":{"name":"PhotonicsViews","volume":"21 5","pages":"57-61"},"PeriodicalIF":0.0,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/phvs.202400035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Reactive sputtering using a medium frequency (MF) dual magnetron source is an advanced technique widely employed in various thin film deposition applications. For the production of high-quality optical filters based on oxides with low losses, it is crucial to exclude any form of arcing, including both strong arcs and microarcs. These requirements are solved by plasmaassisted reactive magnetron sputtering (PARMS), which also provides a high deposition rate contributing to the economically efficient production of high-end optical filters.
{"title":"PARMS coating technology for UV to IR laser applications","authors":"","doi":"10.1002/phvs.202470515","DOIUrl":"https://doi.org/10.1002/phvs.202470515","url":null,"abstract":"<p>Reactive sputtering using a medium frequency (MF) dual magnetron source is an advanced technique widely employed in various thin film deposition applications. For the production of high-quality optical filters based on oxides with low losses, it is crucial to exclude any form of arcing, including both strong arcs and microarcs. These requirements are solved by plasmaassisted reactive magnetron sputtering (PARMS), which also provides a high deposition rate contributing to the economically efficient production of high-end optical filters.</p>","PeriodicalId":101021,"journal":{"name":"PhotonicsViews","volume":"21 5","pages":"56"},"PeriodicalIF":0.0,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/phvs.202470515","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142574018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Extensive R&D applied various laser sources — from nanosecond VIS-wavelength to femtosecond IR and water-jet guided lasers — to enhance the quality and efficiency of laser structuring, fine cutting, and drilling of silicon carbide. Tests focused on surface roughness, cutting line precision, and high ablation rates. Challenges due to diverse material compositions, like diamond layers, required combined methods to develop viable approaches. To meet economic constraints, mechanical grinding was integrated with recurring laser processing.
广泛的研究与开发应用了各种激光源（从纳秒 VIS 波长到飞秒红外激光器和喷水导引激光器），以提高碳化硅激光成型、精细切割和钻孔的质量和效率。测试的重点是表面粗糙度、切割线精度和高烧蚀率。由于材料成分（如金刚石层）的多样性，需要采用综合方法来开发可行的方法。为了满足经济上的限制，机械研磨与循环激光加工相结合。
{"title":"SiC high-tech ceramics — a comparison of laser processes","authors":"Christian Rochholz, Andreas Meudtner","doi":"10.1002/phvs.202400038","DOIUrl":"https://doi.org/10.1002/phvs.202400038","url":null,"abstract":"<p>Extensive R&D applied various laser sources — from nanosecond VIS-wavelength to femtosecond IR and water-jet guided lasers — to enhance the quality and efficiency of laser structuring, fine cutting, and drilling of silicon carbide. Tests focused on surface roughness, cutting line precision, and high ablation rates. Challenges due to diverse material compositions, like diamond layers, required combined methods to develop viable approaches. To meet economic constraints, mechanical grinding was integrated with recurring laser processing.</p>","PeriodicalId":101021,"journal":{"name":"PhotonicsViews","volume":"21 5","pages":"48-51"},"PeriodicalIF":0.0,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/phvs.202400038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Christian Gaida, Tobias Heuermann, Sven Breitkopf, Tino Eidam, Jens Limpert
A novel compact laser utilizing thulium-based fiber chirped-pulse amplification (CPA) technology has been developed to enable essential tasks such as microwelding or the precision cutting of filaments with semiconductors such as silicon. At a central wavelength of 2 μm, the activeTwo-15 provides pulse energies exceeding 100 μJ and an average power output surpassing 15 W, and can be seamlessly integrated into systems for materials processing.
{"title":"Industrial-grade 2-μm ultrafast fiber laser CPA for silicon processing","authors":"Christian Gaida, Tobias Heuermann, Sven Breitkopf, Tino Eidam, Jens Limpert","doi":"10.1002/phvs.202400036","DOIUrl":"https://doi.org/10.1002/phvs.202400036","url":null,"abstract":"<p>A novel compact laser utilizing thulium-based fiber chirped-pulse amplification (CPA) technology has been developed to enable essential tasks such as microwelding or the precision cutting of filaments with semiconductors such as silicon. At a central wavelength of 2 μm, the activeTwo-15 provides pulse energies exceeding 100 μJ and an average power output surpassing 15 W, and can be seamlessly integrated into systems for materials processing.</p>","PeriodicalId":101021,"journal":{"name":"PhotonicsViews","volume":"21 5","pages":"44-47"},"PeriodicalIF":0.0,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/phvs.202400036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Deividas Andriukaitis, Mantvydas Jašinskas, Paulius Gečys, Christian Bischoff
Femtosecond lasers have become essential tools in material processing. Thanks to their ultrashort pulse duration, these lasers can process a wide range of materials without causing significant thermal effects, leading to superior quality. Dielectric materials, especially glass and ceramics, are among those that benefit the most from femtosecond laser technology. Traditional processing methods often struggle with these materials, but femtosecond lasers provide a solution with high precision and quality.
{"title":"Dielectric material processing with ultrashort pulses","authors":"Deividas Andriukaitis, Mantvydas Jašinskas, Paulius Gečys, Christian Bischoff","doi":"10.1002/phvs.202400040","DOIUrl":"https://doi.org/10.1002/phvs.202400040","url":null,"abstract":"<p>Femtosecond lasers have become essential tools in material processing. Thanks to their ultrashort pulse duration, these lasers can process a wide range of materials without causing significant thermal effects, leading to superior quality. Dielectric materials, especially glass and ceramics, are among those that benefit the most from femtosecond laser technology. Traditional processing methods often struggle with these materials, but femtosecond lasers provide a solution with high precision and quality.</p>","PeriodicalId":101021,"journal":{"name":"PhotonicsViews","volume":"21 5","pages":"52-56"},"PeriodicalIF":0.0,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/phvs.202400040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142574017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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