Laser Machining of Sinusoidal Perturbation
Abstract
This report presents a method for machining sinusoidal perturbation in polystyrene by repetitively pulsed excimer laser ablation developed at NRL. This robust method of target manufacturing can be completed in room air, without complex environmental or optical stability control, at a reasonable production rate, and is simple to adjust. Machined polystyrene is used as experimental targets to study laser plasma interactions on the Nike Laser. Having this capability, on site, at NRL allowed for shorter iteration time for customization of the sinusoidal amplitude and wavelength concurrent with experiments. Targets with sinusoidal perturbation were used in Nike experiments range from 2 to 20 microns in amplitude and 30 to 46 microns in wavelength. Sinusoidal perturbations during production were ablated at rates of 0.07 to 0.2 microns per laser pulse. The laser, choice of optical elements, materials, and optical configurations are described. Detailed explanations for the unique optical elements used in this method that are not part of prior Fourier ablation systems. Materials tested in addition to polystyrene and future setup recommendations are also discussed
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 17, 2023
- Accession Number
- AD1208914
Entities
People
- Max Karasik
- Sasha Velikovich
- T. J. Kessler
- Yefim Aglitskiy
Organizations
- United States Naval Research Laboratory