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abstract:
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We describe a resonant laser-powered structure, measur-
ing 1 mm or less in every dimension, that is capable of
generating and accelerating electron beams to low ener-
gies ( ∼ 1–2 MeV). Like several other recently investigated
dielectric-based accelerators, the device is planar and res-
onantly excited with a side-coupled laser; however, exten-
sive modifications are necessary for synchronous accelera-
tion and focusing of nonrelativistic particles. Electrons are
generated within the device via a novel ferroelectric-based
cathode. The accelerator is constructed from dielectric ma-
terial using conventional microfabrication techniques and
powered by a 1-μm gigawatt laser. The electron beams pro-
duced are suitable for a number of existing industrial and
medical applications.
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