Abstract Details
Ultrafast Dynamic Ellipsometry for Studying Shock and Ablation Dynamics
Author: Cynthia A Bolme
Requested Type: Oral Only
Submitted: 2009-04-20 17:18:15
Co-authors: S. D. McGrane, D. S. Moore, D. E. Eakins, D. J. Funk
Contact Info:
Los Alamos National Laboratory
P.O. Box 1663, MS P952
Los Alamos, NM 87545
United States
Abstract Text:
In our quest to learn about the kinetics and mechanisms of shock-induced chemical reactions and phase transitions, we have developed techniques to generate supported shock waves and to probe the resulting time-resolved material dynamics using a tabletop laser system. Ultrafast dynamic ellipsometry (UDE) employs a chirped femtosecond laser pulse with two Mach-Zehnder interferometers to probe picosecond material dynamics in a single shot. Changes in the phase shift and reflectivity of the polarized probe components provide spatially resolved information about the movement of the material and about changes in its complex refractive index. Details of this experimental technique will be presented along with results from its application to shock and ablation dynamics.
Comments: