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Laser marking of materials by means of micro mirror array

: Kuntze, T.; Panzner, M.; Klotzbach, U.; Beyer, E.

Beyer, E.:
ICALEO 2002, 21st International Congress on Applications of Lasers & Electro-Optics. Congress proceedings. CD-ROM : October 14 - 17, 2002, Scottsdale, Ariz., USA
Orlando, Fla.: LIA, 2002 (LIA 94)
ISBN: 0-912035-72-2
ISBN: 978-0-912035-72-7
Section A: Welding
International Congress on Applications of Lasers and Electro Optics (ICALEO) <21, 2002, Scottsdale/Ariz.>
Laser Materials Processing Conference <2002, Scottsdale/Ariz.>
Laser Microfabrication Conference <2002, Scottsdale/Ariz.>
Conference Paper
Fraunhofer IWS ()

Increasing the marking speed is of growing importance for the packaging industry. For this reason it was necessary to investigate the potential of micro mirror devices (MMDs) in combination with well absorbed and short-pulsed UV-excimer laser beams. The advantage of this new marking technique in comparison with conventional processes is the ability to generate the finest markings by one laser pulse so the marking speed is only limited by the pulse frequency of the laser. Computer-controlled micro mirror arrays bring highest flexibility into the marking process: within only one laser pulse (typical 30 ... 40 ns), up to millions of pixels can be transferred to the material.