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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1992),
  • paper CThJ3

Mechanism of laser ablation of a thin liquid film on an opaque surface

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Abstract

The recent success of the technique of laser cleaning of surfaces1 prompted us to do a detail study of the mechanisms involved. In this technique, particles of submicron sizes are removed from the surface by the explosion of a liquid film deposited on the surface with the liquid-substrate interface being heated by a KrF excimer laser of ~16-ns pulse width. It is believed that the liquid at the interface is superheated during the laser duration and explodes when the superheat limit is reached. The particles are then ejected from fire surface by this exploding liquid pressure.

© 1992 Optical Society of America

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