Absorption of Ultrashort Laser Pulses by Solid Targets Heated Rapidly to Temperatures 1–1000 eV

D. F. Price, R. M. More, R. S. Walling, G. Guethlein, R. L. Shepherd, R. E. Stewart, and W. E. White
Phys. Rev. Lett. 75, 252 – Published 10 July 1995
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Abstract

We report measurements of laser absorption for high-contrast ultrashort pulses on a variety of solid targets over an intensity range of 1013 to 1018 W/ cm2. These data give an experimental determination of the target energy content and an indirect measure of dense plasma electrical conductivity. Our calculations accurately reproduce the behavior of aluminum targets, while the other materials show signs of additional absorption mechanisms. At high intensity all target materials reach a “universal plasma mirror” state and reflect about 90% of the incident light.

  • Received 4 April 1995

DOI:https://doi.org/10.1103/PhysRevLett.75.252

©1995 American Physical Society

Authors & Affiliations

D. F. Price, R. M. More, R. S. Walling, G. Guethlein, R. L. Shepherd, R. E. Stewart, and W. E. White

  • Lawrence Livermore National Laboratory, Livermore, California 94550

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Vol. 75, Iss. 2 — 10 July 1995

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