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- Title
Asymmetric Dual-Grating Dielectric Laser Accelerator Optimization.
- Authors
Crisp, Sophie; Ody, Alexander; Musumeci, Pietro
- Abstract
Although hundreds of keV in energy gain have already been demonstrated in dielectric laser accelerators (DLAs), the challenge of creating structures that can confine electrons for multiple millimeters remains. We focus here on dual gratings with single-sided drive, which have experimentally demonstrated energy modulation numerous times. Using a Finite-Difference Time-Domain 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; however, we also find 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.
- Subjects
LASERS; DIELECTRICS; ACCELERATOR mass spectrometry; PARTICLE accelerators; OPTICAL gratings
- Publication
Instruments (2410-390X), 2023, Vol 7, Issue 4, p51
- ISSN
2410-390X
- Publication type
Article
- DOI
10.3390/instruments7040051