W. Andreas Schroeder, Thomas S. Stark, Martin D. Dawson, Thomas F. Boggess, and Arthur L. Smirl. Center for Laser Science and Engineering, University of ...
Picosecond separation and measurement of coexisting photorefractive, bound-electronic, and free-carrier grating dynamics in GaAs W. Andreas Schroeder, Thomas S. Stark, Martin D. Dawson, Thomas F. Boggess, and Arthur L. Smirl Center for Laser Science and Engineering, University of Iowa, Iowa City, Iowa 52242 G. C. Valley Hughes Research Laboratories,3011Malibu Canyon Road, Malibu, California 90265 Received August 8, 1990; accepted October 25, 1990; manuscript in hand November 30, 1990 A novel transient-grating geometry, which is nondegenerate, copropagating, phase matched, and polarization sensitive, is used to isolate and measure independently the ultrafast dynamics of multiple coexisting gratings in GaAs:EL2 with a temporal resolution of
