Dr. Keith Cohn joined the Naval Postgraduate School physics faculty in July of 2009. Prior to his appointment to NPS, he was a graduate student, then a postdoctoral scholar, in the Superconducting Accelerator/Free Electron Laser group at Stanford University. There he studied novel techniques in nonlinear optical spectroscopy, infrared imaging with high spatial resolution, ion trapping in linear accelerators, and higher-order mode excitation in energy recovery linear accelerators. He has operational experience working with free-electron lasers and high-power solid-state lasers. He currently works with Dr. Joseph Blau on directed energy weapons research, and together they study direct energy laser designs, optical and electron beam propagation, integration with naval platforms, and applications of directed energy in the combat environment. He is the co-recipient of the 2015 Directed Energy Award from the Association of Old Crows. Prof. Cohn holds a Ph.D. and M.S. degrees in physics from Stanford University, and B.S. degrees in physics and chemistry from the University of Texas at Austin.