Single pulse ultrafast dynamic ellipsometry

David S. Moore; Cynthia A. Bolme; Shawn D. McGrane; David J. Funk

doi:10.1117/12.674782

7 June 2006 Single pulse ultrafast dynamic ellipsometry

David S. Moore, Cynthia A. Bolme, Shawn D. McGrane, David J. Funk

Proceedings Volume 6261, High-Power Laser Ablation VI; 626105 (2006) https://doi.org/10.1117/12.674782
Event: High-Power Laser Ablation 2006, 2006, Taos, NM, United States

Abstract

Ellipsometry is a very useful optical technique to probe the complex index of refraction of a material. We perform dynamic ellipsometry using ultrafast lasers to probe the complex index dynamics during passage of compressional shock waves through materials of interest. When used to measure passage of a shock wave through dielectric materials, dynamic ellipsometry provides a direct measure of the equation of state (except temperature). In addition, the changes in complex index can be used to measure phase transformations and their kinetics. Using two CCD cameras and two Wollaston prisms, ellipsometric data at two incidence angles and two polarizations can be obtained simultaneously. Adding a spectrograph in front of each CCD camera and using chirped probe pulses and frequency domain interferometry provides a few hundred ps of ellipsometric data from a single shock event.

Citation Download Citation

David S. Moore, Cynthia A. Bolme, Shawn D. McGrane, and David J. Funk "Single pulse ultrafast dynamic ellipsometry", Proc. SPIE 6261, High-Power Laser Ablation VI, 626105 (7 June 2006); https://doi.org/10.1117/12.674782

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