Abstract
Acceleration of charged particles exploiting the large optical field strength of short laser pulses and the proximity of a dielectric structure has been envisioned to revolutionize particle accelerators [1,2]. Direct acceleration by the optical carrier field of the laser can take place in the vicinity of a grating, also known as the inverse Smith-Purcell effect [3], which has been observed at a metal grating with a terahertz radiation source, however, the acceleration gradient was small (keV/m) [4]. Dielectrics allow much larger acceleration gradients and hence much smaller accelerators due to their orders of magnitude higher damage threshold in the optical regime as compared to metals. Using dielectric gratings as an optical accelerator has been proposed by Plettner et al. [5].
© 2013 IEEE
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