Throughput scaling by spatial beam shaping and dynamic focusing
Kumkar M, Kaiser M, Kleiner J, Flamm D, Grossmann D, Bergner K, Zimmermann F, Nolte S (2017)
Publication Type: Conference contribution
Publication year: 2017
Journal
Publisher: SPIE
Book Volume: 10091
Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering
Event location: San Francisco, CA, USA
ISBN: 9781510606234
DOI: 10.1117/12.2256228
Abstract
With availability of high power ultra short pulsed lasers, one prerequisite towards throughput scaling demanded for industrial ultrafast laser processing was recently achieved. We will present different scaling approaches for ultrafast machining, including raster and vector based concepts. The main attention is on beam shaping for enlarged, tailored processed volume per pulse. Some aspects on vector based machining using beam shaping are discussed. With engraving of steel and full thickness modification of transparent materials, two different approaches for throughput scaling by confined interaction volume, avoiding detrimental heat accumulation, are exemplified. In Contrast, welding of transparent materials based on nonlinear absorption benefits from ultra short pulse processing in heat accumulation regime. Results on in-situ stress birefringence microscopy demonstrate the complex interplay of processing parameters on heat accumulation. With respect to process development, the potential of in-in-situ diagnostics, extended to high power ultrafast lasers and diagnostics allowing for multi-scale resolution in space and time is addressed.
Involved external institutions
Germany (DE)How to cite
APA:
Kumkar, M., Kaiser, M., Kleiner, J., Flamm, D., Grossmann, D., Bergner, K.,... Nolte, S. (2017). Throughput scaling by spatial beam shaping and dynamic focusing. In Beat Neuenschwander, Tetsuya Makimura, Costas P. Grigoropoulos, Gediminas Raciukaitis (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. San Francisco, CA, USA: SPIE.
MLA:
Kumkar, M., et al. "Throughput scaling by spatial beam shaping and dynamic focusing." Proceedings of the Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXII 2017, San Francisco, CA, USA Ed. Beat Neuenschwander, Tetsuya Makimura, Costas P. Grigoropoulos, Gediminas Raciukaitis, SPIE, 2017.
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