About the article
Marwan Abdou Ahmed
Marwan Abdou Ahmed received his ‘Diplôme d’Etudes Approfondies’ in 1999 and his PhD degree in 2003 at the University of Saint-Etienne, France. In 2004, he joined the Institut für Strahlwerkzeuge (IFSW), working mainly on the development of polarization and wavelength selective grating waveguide optics for high-power solid state lasers and on specialty fibers for high-power beam delivery. Since June 2011, he is responsible for the ‘Laser Development and Laser Optics’ Department at the IFSW.
Martin Rumpel received his diploma degree in engineering from the University of Stuttgart, Germany. Since the beginning of 2011, he is working towards a PhD degree, where he is involved in the modeling and spectroscopic characterization, as well as characterization in laser operation of sub-wavelength waveguide grating structures for polarization and frequency selection in solid state lasers, particularly Yb:YAG thin-disk lasers.
Andreas Voss received his physics diploma in 1988 at the University of Dortmund and his PhD degree in 2002 at the Universität Stuttgart. In 1990, he joined the Institut für Strahlwerkzeuge (IFSW), working mainly on the development of the thin-disk laser until 1997. From 1998 until 2005, he was with TRUMPF Laser GmbH & Co. KG in Schramberg, Germany, where he continued his work on thin-disk laser. Since 2005, he is back at the IFSW, where he is responsible for scientific research on thin-disk and fiber lasers, laser optics, and optical fibers.
Thomas Graf was born in Switzerland in 1966. He received his physics MSc degree in 1993 and his PhD degree in 1996 from the University of Bern. After 15 months of research at Strathclyde University in Glasgow (UK), he was appointed Head of the High-Power Lasers Group at the Institute of Applied Physics at the University of Bern (in April 1999), where he was awarded a ‘venia docendi’ in 2001 and was appointed Assistant Professor in April 2002. In June 2004, he was appointed University Professor and Director of the Institut für Strahlwerkzeuge (IFSW) at the University of Stuttgart (D). At the IFSW, Prof. Graf is engaged in high-power laser systems, laser beam shaping, and laser applications in manufacturing. From 2001 to 2007, Prof. Graf served as a board member of the Swiss Society for Optics and Microscopy (SSOM), he is a board member of the European Optical Society (EOS), a board member of Photonics BW e.V., and is a regular member of the German Wissenschaftliche Gesellschaft Lasertechnik e.V., WLT (Scientific Society for Laser Technology).
Published Online: 2012-10-10
Published in Print: 2012-10-01