Hans Zappe is Professor of Micro-Optics in the Department of Microsystems Engineering at University of Freiburg, where he also manages the Laboratory for Micro-Optics in the Department of Microsystems Engineering. He has 20 years' experience working on optical micro- and nanosystems, integrated optics, and semiconductor lasers, and he is internationally renowned for his teaching and research. He has previously authored two textbooks and his current research interests include the use of micro-optics for medical applications and the development of tunable micro-optical components and systems.