Three-dimensional particle-in-cell simulations of intense few-cycle pulse, multilayer interference coating interactions

Joseph R. Smith; Simin Zhang; Charles Varin; Vitaly E. Gruzdev; Enam A. Chowdhury

doi:10.1117/12.2598480

12 October 2021 Three-dimensional particle-in-cell simulations of intense few-cycle pulse, multilayer interference coating interactions

Joseph R. Smith, Simin Zhang, Charles Varin, Vitaly E. Gruzdev, Enam A. Chowdhury

Author Affiliations +

Proceedings Volume 11910, Laser-Induced Damage in Optical Materials 2021; 119100E (2021) https://doi.org/10.1117/12.2598480
Event: SPIE Laser Damage, 2021, Online Only

Abstract

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.

Conference Presentation

Citation Download Citation

Joseph R. Smith, Simin Zhang, Charles Varin, Vitaly E. Gruzdev, and Enam A. Chowdhury "Three-dimensional particle-in-cell simulations of intense few-cycle pulse, multilayer interference coating interactions", Proc. SPIE 11910, Laser-Induced Damage in Optical Materials 2021, 119100E (12 October 2021); https://doi.org/10.1117/12.2598480

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