Diploma in physics, University Göttingen, 1966. Doctor in Physics, Technische University, Munich, 1969.
Habilitation, U. Geneva, Switzerland, 1976; habilitation, Eidgenössische Technische Hochschule, Zürich, Switzerland, 1978; professor, U. Münster, Federal Republic of Germany, 1978. Holder of the chair in physics U. Münster, since 1978. Director Institute of Applied Physics, Münster, since 1978.