Research Alliance
„Ultrashort pulse lasers for high precision processing”

Prof. Dr. Stefan Nolte Institute of Applied Physics, Friedrich Schiller University Jena, and Fraunhofer Institute for Applied Optics and Precision Engineering, IOF (Source: FSU)

Prof. Dr. Stefan Nolte
Institute of Applied Physics,
Friedrich Schiller University Jena, and Fraunhofer Institute for Applied Optics and Precision Engineering, IOF (Source: FSU)

To fully explore the potential of ultrashort pulses and to implement this technology in production processes, several issues have to be addressed. This includes the development of innovative, inexpensive and powerful laser systems, long-term stable optical components as well as highly dynamic beam control and shaping along with the laser-based processes adapted to the capabilities of the new laser sources and equipment.

These challenges have been met by the research alliance „Ultrashort pulse lasers for high precision processing”, which has been supported with more than 20 million Euros by the German Federal Ministry of Edu­ca­tion and Rese­arch, BMBF. Within ten joint research projects, several companies and research institutes have investigated the different aspects of ultrafast technology. In this virtual issue of articles in Laser Technik Journal and Optik & Photonik, key results will be highlighted.

Stefan Nolte


 

Editorial

International Year of Light 2015 — What is Next?Research Alliance „Ultrashort pulse lasers for high precision processing”
  • Stefan Nolte
  • Laser Technik Journal 2016/1 January, p. 1-1


Material Processing

Ultrashort‐pulse Laser Structuring of Thin‐film Solar Modules

With support from the German “Innovationsallianz Photovoltaik”, the joint research project T4nPV demonstrated ultrashort‐pulse all‐laser scribed CIGS solar modules with a 5.9 % (relative) higher electrical conversion efficiency compared to conventional, mechanically scribed reference modules. This remarkable efficiency gain was achieved by a reduction of the interconnection width down to approximately 100 μm, made possible…

  • Mawuli Ametowobla, Gabor Matthäus
  • Laser Technik Journal 2016/1 January, p. 28-31
  • DOI: 10.1002/latj.201600002


Laser Beam Sources

A New Concept in Picosecond Lasers

Over the last decade, mode‐locked laser sources in the ten picosecond pulse regime expanded into medical applications and high‐precision micro‐material machining. However, the complexity and the alignment sensitivity of picosecond lasers translated to higher cost and impeded a broader market entry. The goal of the iPLASE project was to develop a novel laser concept (Fig. 1) which is capable of generating sub‐10 picosecond…

  • Rico Hohmuth, Peer Burdack, Jens Limpert
  • Laser Technik Journal 2016/1 January, p. 33-37
  • DOI: 10.1002/latj.201600001


USP Laser Applications

Femtosecond Lasers in Ophthalmology

Within the research network IKARUS, a femtosecond laser system has been realized, which is able to gen- erate microscopic sliding into the crys- talline lens, to restore the accommo- dative capacity of the eye. The surgical procedure only takes a few seconds and is non-invasive. As a consequence, there is no risk of infection for the pa- tient and the procedure can be carried out in non-sterile environment…

  • Ben Matthias, Uwe Oberheide, Alexander Krüger, Tammo Ripken and Holger Lubatschowski
  • Optik & Photonik 2016/ April, p. 49-53
  • DOI: 10.1002/opph.201600007