Dr. Robert L. Hengehold, Professor Emeritus
Research Interests
Dr. Hengehold's research and consulting activities have been primarily in the area of experimental solid state and optical physics. Past research activities have included surface studies of metals, electron energy loss spectroscopy of metals and semiconductors, vacuum ultraviolet spectroscopy, photoluminescence, selective excitation luminescence, cathode-luminescence, and time-resolved spectroscopy of semiconductors including rare-earth doped Si, GaAs and AlxGa1-xAs, Si/Ge superlattices, GaSb, the wide bandgap materials, GaN, AlN, and AlxGa1-xN, and femtosecond lifetime measurements of mid-infrared quantum well laser structures using time resolved photoluminescence and upconversion techniques He is currently carrying out optical studies of materials for neutron detection as well as photoemission studies of the actinides. He has directed the doctoral research of 18 Ph.D. students and over 80 M.S. students. This research has been carried out in collaboration with AF Research Laboratories, Naval Research Laboratory, Lincoln Laboratory, the University of Vermont, and the University of Nebraska.. Dr. Hengehold served as a Senior Research Associate at the Aerospace Research Laboratories from 1969-1975.