Applications of Systems for Beam Shaping in Material Processing Pulsar Photonics GmbH
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1 LASER World of Photonics 2015 Workshop Using Diffractive Optics Applications of Systems for Beam Shaping in Material Processing Pulsar Photonics GmbH Speaker Dipl. Phys. Stephan Eifel, Pulsar Photonics GmbH Stephan Eifel received his diploma in physics at Aachen University in From 2009 to 2015 he worked as scientific assistant at Fraunhofer ILT. His research was focused on micromachining using ultra-short pulsed laser with high average power and the development of adapted scanning systems. Stephan Eifel is co-founder and managing partner of Pulsar Photonics GmbH. Stephan Eifel Pulsar Photonics GmbH Steinbachstraße Aachen Tel.: Fax: Website:
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3 Applications of Systems for Beam Shaping in Material Processing Pulsar Photonics GmbH Laser Components Workshop June 25th 2015 Stephan Eifel Pulsar Photonics GmbH HRB Amtsgericht Aachen Geschäftsführung: Jens Holtkamp, Joachim Ryll, Stephan Eifel Pulsar Photonics GmbH Who we are, what we do Foundation: 2013 Spin-off of Fraunhofer ILT Core competences: Process- and System technology for Laser micro processing Forschungscampus DPP 7000 qm Start date Januar 23rd 2015 Our business areas: Lasermikrostrukturierung Funktionale Oberflächen Laserfeinschneiden Lasermikrobohren Laser machining services Laser system technology Laser machine technology Seite 2 Pulsar Photonics GmbH 3
4 Market analysis USP-processing Results of survey at UKP-Workshop 2013 Support of statement in % of participants Process 100% knowledge 90% 80% 70% 60% 50% 40% 30% 20% 10% 0%! Barriers in the industrial implementation of ultra short pulsed laser processes! Productivity! Flexibility alle Anwender n=81 Seite 3 Pulsar Photonics GmbH Factors that limit increase in productivity Overview Scanning System Scan efficiency Work piece Heat accumulation Seite 4 Pulsar Photonics GmbH 4
5 Factors that limit increase in productivity Heat accumulation in the work piece 10W Laser power 7W USP Laser, Point & Shoot, Steel foil, 1030 nm, 6ps, 800 khz Seite 5 Pulsar Photonics GmbH 2W Factors that limit increase in productivity Heat accumulation in the work piece 10W Laser power 7W USP Laser, Point & Shoot, Steel foil, 1030 nm, 6ps, 800 khz Seite 6 Pulsar Photonics GmbH 2W Energy input per volume and time is limited! Inefficient usage of your laser systems power potential ( W) 5
6 Choosing the right scanning system Scan efficiency model Source: Lincolnlaser v scan = v Pixel = 2 m/s Seite 7 Pulsar Photonics GmbH Factors that limit increase in productivity Solution to productivity problem Work piece Seite 8 Pulsar Photonics GmbH Thermal management realized by adapted and efficient scanning systems is key to high productivity USP processing 6
7 MultiBeamScanner (MBS) Optical Principle Seite 10 Pulsar Photonics GmbH Laser processing with a spot array instead of a single spot MultiBeamScanner (MBS) Optical Principle Seite 11 Pulsar Photonics GmbH Laser processing with a spot array instead of a single spot 7
8 Pulsar Photonics MultiBeamScanner P2 mbs 532ct G2 Galvanometer scanner Camera module P2 mbs 532ct G2 CAD /CAM -Software Topography Multibeam - Technology Seite 12 Pulsar Photonics GmbH Application in Electronics Multibeam Technology for LTCC-Processing Green ceramics on carrier foil Via-hole diameter Ø20-25 µm Hole distance 100 µm Target Drilling rate sec -1 Multi beam approach 4x4 Connecting terminal Ceramic layers (dielectric) Electrode Coating Connecting terminal Seite 13 Pulsar Photonics GmbH 8
9 Application in Electronics Process video Laser drilling with up to 14 khz Seite 14 Pulsar Photonics GmbH Application in Electronics Multibeam Technology for LTCC-Processing Laser Multibeam 4x4 Hole diameter Ø23 ±1,5 µm Drilling rate Maximum: 14 khz Average: >6.4 khz Seite 15 Pulsar Photonics GmbH 100 µm 9
10 Laser processing of multiple parts Parallel production of micro springs in steel Micro springs: Foil thickness: 30 µm Diameter spring: 5 mm Kerf width: 50 µm 2 x 2 laser processing Seite 16 Pulsar Photonics GmbH Application in tribology Mechanical face seals / Laufwerkdichtungen Reduction of friction by micro structuring High-speed operation Increase in leakage not allowed Neumann et al. Seite 17 Pulsar Photonics GmbH 10
11 Application in tribology Mechanical face seals / Laufwerkdichtungen Macro structure eroded Friction coeff. µ -25% Leakage +-0% Sliding and sealling surface lapped Secondary sealing element NBR-Rubber USP-structuring Triple functionalization Seite 18 Pulsar Photonics GmbH Partially periodic structures Approaches to increase productivity MBS processing by changing beam splitter pattern Full shape processing Optical stamping Seite 19 Pulsar Photonics GmbH 11
12 Optical stamping Using shaped intensity distributions for laser processing Speckles interference of coherent laser light (single mode) Inhomogeneous ablation Seite 20 Pulsar Photonics GmbH Outlook & future projects Increase working area of MBS Multi beam laser helical drilling system Multi beam helical drilling using 2x2 DOE Seite 21 Pulsar Photonics GmbH 12
13 Thank you for your attention! Vielen Dank für Ihre Aufmerksamkeit! München, Juni 2015 A3.137 Pulsar Photonics GmbH Steinbachstraße Aachen Telefon: +49 (0) 241 / Fax: +49 (0) 241 / info@pulsar-photonics.de Homepage: Seite 22 Pulsar Photonics GmbH 13
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