Annular beam shaping system for advanced 3D laser brazing

Oliver Pütsch; Jochen Stollenwerk; Markus Kogel-Hollacher; Martin Traub

doi:10.1515/aot-2012-0040

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Annular beam shaping system for advanced 3D laser brazing

Oliver Pütsch
Oliver Pütsch received his diploma in Mechatronics Engineering from Aachen University of Applied Sciences, Germany in 2008 and his MSc in Mechatronics in 2010. During his masters course, he worked at the Faculty of Mechanical Engineering and Mechatronics at Aachen University of Applied Sciences in the subject area of Microtechnology. He is currently pursuing a PhD in engineering and has been working as a research scientist at the Chair for Technology of Optical Systems at RWTH Aachen University since 2011. His research interests are the application and development of active and controlled optical devices.
, Jochen Stollenwerk
Dr. Jochen Stollenwerk received his Diploma degree in Physics at the RWTH Aachen University in 1996. He was a scientific employee at the Fraunhofer-Institute for Laser Technology in Aachen (ILT) and received his PhD in the area of Laser Materials Processing in 2001. After his PhD examination, he moved to TRUMPF Laser Marking Systems (Grüsch, Switzerland), where he was responsible for the Application department. In 2004, he became the Vice Director at the newly founded Chair for ‘Technology of Optical Systems’ at RWTH Aachen University and additionally took over the responsibility for the group ‘Thin Film Laser Processing’ at the Fraunhofer-Institute for Laser Technology.
, Markus Kogel-Hollacher
Markus Kogel-Hollacher began his activities in the area of lasers working for his MS degree at the Fraunhofer Institute for Laser Technology in 1994. Since then, the focus of his work has been in the field of monitoring and control of laser processes. After earning his MS degree in physics in 1996 from the RWTH Aachen University in Germany, he joined Precitec Optronik GmbH (formerly Jurca Optoelektronik GmbH) in Rodgau, Germany, continuing the work with the emphasis on transferring R&D results to industrial solutions. This work has been discussed extensively in several technical journals and presented at various conferences. In his position as the head of the department’s R&D projects in the Precitec Group, he oversees national and international governmentally funded projects. Working together with RTD performers and end users, his guiding principle is to continuously increase the reliability and the use of process monitoring and process control devices in laser materials processing. In 2008, he obtained his PhD at the Technical University of Berlin, Germany. Dr. Kogel-Hollacher has been a member of the Laser Institute of America (LIA) since 2002. At present, he is a member of the board of directors at the LIA and recently has served as a jury member of the Innovation Award Laser Technology.
und Martin Traub
Martin Traub studied mechanical engineering at the RWTH Aachen and Michigan State University. He received his diploma in 1999 and started working as a research scientist at the Fraunhofer ILT. He gained a diploma in Industrial Engineering from RWTH Aachen in 2003. Since 2008, he leads the group ‘Optics Design and Diode Lasers’ at the Fraunhofer ILT.