Effects of small, intense laser spots on thin films
- 1 September 1986
- journal article
- letter
- Published by AIP Publishing in Physics of Fluids
- Vol. 29 (9) , 3093-3096
- https://doi.org/10.1063/1.865472
Abstract
Two‐dimensional hydrodynamic simulations show that small diameter laser spots burn through flat foils considerably faster than larger spots. The physical mechanisms are (1) more nearly spherical divergence from the smaller spots which allows the debris to rapidly convect radially away from the small volume of laser heated plasma and (2) a variation on thermal self‐focusing in which light is refracted into this volume, increasing the local heating rate.Keywords
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