Microstructuring with Femtosecond Lasers

Nolte, Stefan; Kamlage, Gunter; Korte, Frank; Bauer, Thorsten; Wagner, Thile; Ostendorf, Andreas; Fallnich, Carsten; Welling, H.

doi:10.1002/(sici)1527-2648(200002)2:1/2<23::aid-adem23>3.0.co;2-l

Cited by 44 publications

(24 citation statements)

References 4 publications

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“…In addition to stainless steel, the ultrashort laser systems are capable of processing various other alloys and organic materials. Figure 7.36 present the prototype stent (used in cardiovascular surgery) fabricated by ultrashort pulse laser indicating the damage-free and burr-free surfaces (Nolte et al 2000).…”

Section: Biomedical Applicationsmentioning

confidence: 99%

Laser Fabrication and Machining of Materials

2008

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except for brief excerpts in connection with reviews or scholarly analysis. Use in connection with any form of information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now know or hereafter developed is forbidden. The use in this publication of trade names, trademarks, service marks and similar terms, even if they are not identifi ed as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights.Printed on acid-free paper. 9 8 7 6 5 4 3 2 1 springer.com v medicine, it is rapidly making headways in the field of biomedicine. As mentioned earlier, Part I provides sufficient basics of lasers and laser processes to spawn thoughts in one's mind for new applications of lasers. Examples of such new applications are described in chapters on laser interference processing, laser shock processing, and laser dressing of grinding wheels. It is hoped that the book will provide further impetus to many more readers to take lasers into new frontiers of applications.Thus, unlike many other books on similar topics, this book deals with the subject of laser-based fabrication and machining in a comprehensive manner. The subject matter in the proposed book extends over a wide range of disciplines that include, but are not limited to, mechanical, electrical/electronics, materials, and manufacturing. Such interdisciplinary discussion of the topic is a need of the time for many undergraduate and graduate academic programs and research activities that themselves are increasingly wielding interdisciplinary flavor. Furthermore, the scope of the subject matter ranging over macro-, to micro-, to nanolevels of processing/ manufacturing is very important to educate and prepare individuals for the next generation manufacturing. In addition, the integration of fundamental principles and physical phenomena governing laser-based fabrication/machining processes and their existing and potential applications have widened the scope of the book across the sectors of academia, research, and industry.

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Section: Biomedical Applicationsmentioning

confidence: 99%

Laser Fabrication and Machining of Materials

2008

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“…Laser ablation with ultrashort pulses (<1 ps) has attracted a lot of attention, not only because of the access to ultrafast physical and chemical processes, but also because of the new prospects for applications in materials processing and thin film deposition (Banks, et al, 1999;Nolte, et al, 2000;Ausanio, et al, 2005;Amoruso, et al, 2005b). Also, for fs laser ablation the initial plume dynamics is important for the physical parameters in the late expansion phase.…”

Section: Plumes From Ultrashort Laser Ablationmentioning

confidence: 99%

Plume Dynamics

Schou

Amoruso

Lunney

2007

Springer Series in Optical Sciences

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“…Thus, any collateral damage to the surrounding machined area is minimized [7]. Consequently, the process efficiency is much higher compared to conventional laser systems due to minimized energy loss into the bulk material and the ablation threshold is reduced [7,8,17]. Additionally, femtosecond lasers have the potential to serve as a straightforward processing technique that does not require any additional postprocessing or special gas environment.…”

Section: Introductionmentioning

confidence: 99%

Femtosecond Laser Micromachining of Single-Crystal Superalloys

Feng

Picard

Liu

et al. 2004

Superalloys 2004 (Tenth International Symposium)

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Investigations on femtosecond laser micromachining of single crystal superalloys with and without plasma-sprayed thermal barrier coatings were conducted under laser fluences ranging from 0.1 J/cm 2 up to 160 J/cm 2 . Micromachining was carried out in air using a titanium:sapphire laser system ( = 780 nm) operating at a repetition rate of 1 kHz and delivering individual pulses of ~150 fs duration. The ablation threshold of the single crystal superalloy was determined as 203 ± 20 mJ/cm 2 . Laser-induced damage was examined by means of scanning electron microscopy and transmission electron microscopy. These studies indicate a complete absence of any melting, recast layers, heat-affected zones or microcracks in the vicinity of the machining area. The only form of damage observed in the single crystal superalloy machined near or above the ablation threshold was a laser-induced plastically deformed layer with a maximum extent of ~5 m. Machining through ceramic thermal barrier coatings on a superalloy produced no delamination along the superalloy/coating interfaces or cracks within the TBC or bond coat. The residual roughness of the machined surface was in the sub-micron range. The present study suggests that femtosecond laser micromachining is a very promising technique for production of finescale features in multi-layer material systems for aerospace and power generation components.

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Microstructuring with Femtosecond Lasers

Cited by 44 publications

References 4 publications

Laser Fabrication and Machining of Materials

Laser Fabrication and Machining of Materials

Plume Dynamics

Femtosecond Laser Micromachining of Single-Crystal Superalloys

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