Аннотация:In recent years laser chemical processing (LCP) has been extensively investigated with respect to both the techncal applications and the fundamental microscopic mechanisms involved. In both connections, the reaction rates achieved in LCP, and the relative contributions of the various different mechanisms, are'of great relevance.
In pyrolytic (photothermal) LCP the analysis of reaction rates requires a knowledge of both the laser—induced temperature rise on the substrate to be processed, and of the transport phenomena within the ambient medium. While direct rneasurernnts of the local laser—induced temperature rise have actually been demonstrated in a few exceptional cases, the information on the material transport is almost exclusively based on model calculations.