Three-dimensional particle-in-cell simulations of intense few-cycle pulse, multilayer interference coating interactions
On demand starting 12 October 2021
The development of next-generation laser optics can be guided by studies looking to improve the laser-induced damage threshold of highly-reflective interference coatings. We model intense few-cycle pulses interacting with multilayer HfO2/SiO2 dielectric interference coatings using fully three-dimensional particle-in-cell simulations to which we have added a Keldysh model for photoionization and a dielectric model to include refractive properties of the materials. We explore the reflection, transmission, and absorption of the laser pulses. We use the predicted excited electron density and energy density to estimate damage thresholds for these optics. This research was funded by DOE STTR grant no. DE-SC0019900.
Joseph R. Smith
The Ohio State Univ. (United States)
Joseph Smith is a postdoctoral researcher at The Ohio State University under the supervision of Enam Chowdhury. His research focus is on computational laser matter interactions.