Application of Ultrafast Spectroscopy in Materials Science
Marat Khafizov
Department of Materials Science and
Engineering,
Idaho National Laboratory
Understanding of nonequilibrium dynamics
in solid state is important for development of optical radiation detectors.
Ultrashort 100-fs-wide-pulse is used as a pump to excite a nonequilibrium
state and second time delayed pulse is used to probe system’s state. This
pump-probe approach allows one to study the dynamical evolution of the
system with 100-fs-resolution. In this presentation, ultrafast processes
in semiconductors, superconductors, and low dimensional systems related
to optoelectronic and photovoltaic applications will be reviewed. An example
of how similar approach can be used to measure thermal transport will be
presented as well.