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Journal Article

Elements of a dielectric laser accelerator


Hommelhoff,  Peter
Hommelhoff Group, Associated Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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McNeur, J., Kozak, M., Schoenenberger, N., Leedle, K. J., Deng, H., Ceballos, A., et al. (2018). Elements of a dielectric laser accelerator. Optica, 5(6), 687-690. doi:10.1364/OPTICA.5.000687.

Cite as: https://hdl.handle.net/21.11116/0000-0003-F665-6
We experimentally demonstrate several physical concepts necessary for the future development of dielectric laser accelerators-photonic elements that utilize the inelastic interaction between electrons and the optical near fields of laser-illuminated periodic nanostructures. To build a fully photonic accelerator, concatenation of elements, large energy gains, and beam steering elements are required. Staged acceleration is shown using two spatio-temporally separated interaction regions. Further, a chirped silicon grating is used to overcome the velocity dephasing of subrelativistic electrons with respect to its optical near fields, and last, a parabolic grating geometry serves for focusing of the electron beam. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement