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Asymmetric Dual-Grating Dielectric Laser Accelerator Optimization
Version 1
: Received: 16 October 2023 / Approved: 19 October 2023 / Online: 19 October 2023 (11:04:53 CEST)
A peer-reviewed article of this Preprint also exists.
Crisp, S.; Ody, A.; Musumeci, P. Asymmetric Dual-Grating Dielectric Laser Accelerator Optimization. Instruments 2023, 7, 51. Crisp, S.; Ody, A.; Musumeci, P. Asymmetric Dual-Grating Dielectric Laser Accelerator Optimization. Instruments 2023, 7, 51.
Abstract
Although hundreds of keV in energy gain have already been demonstrated in dielectric laser accelerators (DLAs), there remains challenge in creating structures that can confine electrons for multiple millimeters. We focus here on dual gratings with single sided drive, which have experimentally demonstrated energy modulation numerous times. Using a FTDT simulation to find the fields within various DLA structures and correlating these results with particle tracking simulation, we look at the impact of teeth height and width, as well as gap and offset, on the performance of these structures. We find a tradeoff between electron throughput and acceleration, but that for any given grating geometry there is a gap and offset that will allow some charge acceleration. For our 780 nm laser wavelength, this results in a 1200 nm optimal gap size for most gratings.
Keywords
DLA; Dielectric Laser Accelerator; Dual Grating; Single Drive
Subject
Physical Sciences, Other
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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