Absorption of laser radiation by Al, Fe, and Au planar metallic targets
- 15 June 1979
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 34 (12) , 841-843
- https://doi.org/10.1063/1.90686
Abstract
Experiments to determine the absorptance of an 8‐nsec (FWHM) 1.064‐μm laser pulse incident on metallic targets were performed using a well‐characterized integrating sphere photometer. The absorptance was inferred by individually measuring the incident, back reflectd, and scattered laser radiation over the range ≃1013–1014 W/cm2 for three different elemental planr targets (Al, Fe, and Au). The absorptance varied approximately linearly from 0.9 at 1013 W/cm2 at 1014 W/cm2 and was independent of target material. The experimental accuracy was ±4%.Keywords
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