Scaling percussion drilling processes by ultrashort laser pulses using advanced beam shaping

Großmann, Daniel; Flamm, Daniel; Hellstern, Julian; Sailer, Marc; Kumkar, Malte

doi:10.1117/12.2545065

Cited by 3 publications

(9 citation statements)

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“…For this purpose, long-working distance microscope objectives with NAs up to 0.5 are available. 6,60 As mentioned in the beginning of this section, the modification step is only one part of the entire cutting process. The actual separation process remains challenging especially if Fig.…”

Section: Laser Cutting Of Transparent Materialsmentioning

confidence: 99%

“…14 and employs an SLM as central beam shaping element. 60 were directly marked onto the substrate's surface-no scanning system was required. Another challenging application that can benefit from appropriate beam shaping flexibility is the percussion drilling of rectangular holes in thin metal foils (FMMs).…”

Section: Laser Surface Structuring and Percussion Drillingmentioning

confidence: 99%

“…14, enables simple realization of arbitrary amplitude distributions without applying Fourier coding techniques, see (and please scan) measured QR-code at the bottom. 60 The application of liquid-crystal-on-silicon-based SLMs shows several limitations regarding beam shaping performance and applicable laser parameters. Extensive diagnostic systems are provided to monitor the behavior of the beam shaping device during the application of high average powers.…”

Section: Laser Surface Structuring and Percussion Drillingmentioning

confidence: 99%

“…18. (a) Direct drilling of quadratic-shaped holes in thin metal sheets with dimensions of ∼10 μm, (b), (c) different taper geometries and achieved hole density of >1000 ppi 60.…”

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confidence: 99%

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Structured light for ultrafast laser micro- and nanoprocessing

et al. 2021

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The industrial maturity of ultrashort pulsed lasers has triggered the development of a plethora of material processing strategies. Recently, the combination of these remarkable temporal pulse properties with advanced structured light concepts has led to breakthroughs in the development of laser application methods, which will now gradually reach industrial environments. We review the efficient generation of customized focus distributions from the near-infrared down to the deep ultraviolet, e.g., based on nondiffracting beams and threedimensional-beam splitters, and demonstrate their impact for micro-and nanomachining of a wide range of materials. In the beam shaping concepts presented, special attention was paid to suitability for both high energies and high powers.

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Section: Laser Cutting Of Transparent Materialsmentioning

confidence: 99%

Section: Laser Surface Structuring and Percussion Drillingmentioning

confidence: 99%

Section: Laser Surface Structuring and Percussion Drillingmentioning

confidence: 99%

“…18. (a) Direct drilling of quadratic-shaped holes in thin metal sheets with dimensions of ∼10 μm, (b), (c) different taper geometries and achieved hole density of >1000 ppi 60.…”

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confidence: 99%

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Structured light for ultrafast laser micro- and nanoprocessing

et al. 2021

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“…For this purpose, long-working distance microscope objectives with NAs up to 0.5 are available. 6,55 As mentioned in the beginning of this section, the modification step is only one part of the entire cutting process. The actual separation process remains challenging especially if comparatively thin < 0.3 mm and thick glasses > 2 mm need to be separated.…”

Section: (B)]mentioning

confidence: 99%

Structured light for ultrafast laser micro- and nanoprocessing

Flamm,

Grossmann,

Sailer

et al. 2020

Preprint

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The industrial maturity of ultrashort pulsed lasers has triggered the development of a plethora of material processing strategies. Recently, the combination of these remarkable temporal pulse properties with advanced structured light concepts has led to breakthroughs in the development of novel laser application methods, which will now gradually reach industrial environments. We review the efficient generation of customized focus distributions from the near infrared down to the deep ultraviolet, e.g., based on non-diffracting beams and 3D-beam splitters, and demonstrate their impact for micro-and nanomachining of a wide range of materials. In the beam shaping concepts presented, special attention was paid to suitability for both high energies and high powers.

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