Nanoscale topography of dynamic surfaces with ultrafast time resolution.
We describe an optical system for detecting the movement of a surface with subnanosecond temporal and nanometer vertical displacement resolution. The system is fielded on an experiment to determine the distortion of a laser-ablated metal layer and compare the results with hydrodynamic simulations. We also discuss errors that can arise and potential means to mitigate them. The resultant data show one can examine dynamic changes to a reflective surface with accuracy down to tens of nanometers at hundreds of picoseconds time resolution.
Valenzuela
Anthony R
AR
Material Physics and Applications Division, Los Alamos National Laboratory, MS K771, P.O. Box 1663, Los Alamos, New Mexico 87545, USA. arv@lanl.gov
Clarke
Steven A
SA
Rodriguez
George
G