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Optical Engineering

Transient Response Of Metals To Ultrashort Pulse Excitation
Author(s): N. K. Sherman; F. Brunel; P. B. Corkum; F. A. Hegmann
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Paper Abstract

An ultrashort light pulse illuminating a metal surface interacts primarily with the electrons. During a transient phase the electrons can be much hotter than the lattice. A two-temperature model predicts that the optical damage threshold of metals will be independent of the optical pulse duration for short pulses. Experiments performed with picosecond 10 um pulses confirm this prediction. The model also predicts, and we experimentally observe, electron emission during the transient phase even for illumination intensities below the damage threshold.

Paper Details

Date Published: 1 October 1989
PDF: 8 pages
Opt. Eng. 28(10) doi: 10.1117/12.7977096
Published in: Optical Engineering Volume 28, Issue 10
Show Author Affiliations
N. K. Sherman, National Research Council Canada (Canada)
F. Brunel, National Research Council Canada (Canada)
P. B. Corkum, National Research Council Canada (Canada)
F. A. Hegmann, National Research Council Canada (Canada)


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