Improved model for the angular dependence of excimer laser ablation rates in polymer materials

J. E. A. Pedder, A. S. Holmes, P. E. Dyer
2009 Applied Physics Letters  
Measurements of the angle-dependent ablation rates of polymers that have applications in microdevice fabrication are reported. A simple model based on Beer's law, including plume absorption, is shown to give good agreement with the experimental findings for polycarbonate and SU8, ablated using the 193 and 248 nm excimer lasers, respectively. The modeling forms a useful tool for designing masks needed to fabricate complex surface relief by ablation.
doi:10.1063/1.3254236 fatcat:jmvg5osrgnchxnf2rscmti7f3a