Transient nonlinear laser heating and deposition: A comparison of theory and experiment
- 1 March 1986
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 59 (5), 1653-1657
- https://doi.org/10.1063/1.336479
Abstract
Time-dependent nonlinear laser-heating calculations have been applied to the laser chemical vapor deposition of reflective metallic coatings on absorptive low thermal conductivity substrates such as fused quartz. The surface temperature profile is modified by the changing optical properties of the substrate as the film is deposited, leading to a decrease in the surface temperature and flattening of the temperature profile with increasing irradiation time and film deposition. The results of the theoretical calculations are compared with real-time optical measurements of the deposition rate of Ni from Ni(CO)4 on SiO2 using a CO2 laser as a function of irradiation time, yielding excellent agreement.Keywords
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