Stories by Gérard A. Mourou and Donald Umstadter

GÉRARD A. MOUROU and DONALD UMSTADTER were among the founders of the National Science Foundation–sponsored Center for Ultrafast Optical Science at the University of Michigan at Ann Arbor. Mourou, the director of the center, is a professor of electrical engineering, and Umstadter is an associate professor of both nuclear and electrical engineering. When they are not accelerating particles with intense lasers, they can be found accelerating down ski slopes to "ultrahigh" speeds.