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Generation of Shock Waves in Confined Excimer Laser Ablation of Polyimide
Published online by Cambridge University Press: 25 February 2011
Abstract
We study acoustic effects associated with the ablation of polyimide under water confinement. Ablation launches a shock in the target. After the shock propagates into the surrounding water we measure its velocity with an optical probe system. In the water the shocks decay after propagating a few hundred microns. The peak shock pressure scales with the square root of the laser fluence. Our observations can be explained by a simple model that interprets the generated pressures as being due to the heating of a confined ideal gas.
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- Copyright © Materials Research Society 1992