Keith A. Nelson
Keith Adam Nelson is an American physical chemist, currently the Haslam and Dewey Professor of Chemistry at Massachusetts Institute of Technology. Nelson won the 2021 William F. Meggars Award from the Optical Society of America "for expanding the horizons of impulsive stimulated Raman scattering (ISRS) to the generation of intense tunable terahertz pulses, thus establishing new transient-grating techniques for a more effective application of time-domain coherent nonlinear spectroscopy in the study of condensed phase molecular dynamics".