Goodnight Innovation Dist. Prof., North Carolina State University

University of California Berkeley, Space Sciences Laboratory

Professor of Physics, University of Colorado

Researcher at the Physics and Astronomy Department, Bologna University

École polytechnique fédérale de Lausanne (EPFL), Paul Scherrer Institut (PSI)

Inst. Optics and Quantum Electronics, Abbe Center of Photonics, University of Jena, Jena …

Space Sciences Lab of UC Berkeley

NASA Goddard Space Flight Center

Helmholtz-Zentrum Berlin

Professor of Physics, University of Rostock, Germany