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Diode laser systems for cutting applications of thin materials

  • Alexander Knitsch
  • , Bernd Seme
  • , Dieter Hoffmann
  • , Dirk Petring
  • , Peter Loosen
  • , Reinhart Poprawe
  • , Reinhard Iffländer
  • Fraunhofer Institute for Laser Technology
  • Trumpf Laser GmbH

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

For cutting applications of sheet thicknesses up to 1 mm a compact diode laser system of high brilliance has been developed. By the combination of three different wavelengths as well as two polarization states six linear polarized diode laser bars are superimposed nearly without loss in beam quality. The maximum optical output power amounts to 155 W at a beam parameter product of about 22 mm mrad. The wavelength- and polarization-multiplexing is realized with one cemented optical component consisting of edge filters, a λ/4-retardation plate and a polarization beam splitter. The linear shaped beam of the six superimposed diode laser bars is symmetrized by micro step mirror beam shaping technology. Limited by manufacturing tolerances and particularly the mounting process of the diode laser bars, the system reaches the limits of incoherent beam multiplexing of six broad area diode laser bars. Combined with beam expanding and focussing optics, cutting experiments on different metallic and organic materials with sheet thicknesses ranging from 0.1 to 1 mm have been realized.

Original languageEnglish
Title of host publicationICALEO 2003 - 22nd International Congress on Applications of Laser and Electro-Optics, Congress Proceedings
PublisherLaser Institute of America
ISBN (Print)0912035757, 9780912035758
DOIs
StatePublished - 2003
Externally publishedYes
EventICALEO 2003 - 22nd International Congress on Applications of Laser and Electro-Optics - Jacksonville, FL, United States
Duration: 13 Oct 200316 Oct 2003

Publication series

NameICALEO 2003 - 22nd International Congress on Applications of Laser and Electro-Optics, Congress Proceedings

Conference

ConferenceICALEO 2003 - 22nd International Congress on Applications of Laser and Electro-Optics
Country/TerritoryUnited States
CityJacksonville, FL
Period13/10/0316/10/03

Keywords

  • Cutting applications
  • High power diode laser
  • Polarization-multiplexing
  • Wavelength-multiplexing

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