Speaker
Description
We present our results for the design, fabrication, and testing of silicon-based, sub-relativistic Dielectric Laser Accelerators (DLAs) which use optical near fields to accelerate and confine electrons over extended distances. We describe how Alternating Phase Focusing (APF) lattices are incorporated to longitudinally/transversely focus/defocus electrons in an alternating fashion based on electron-laser interaction phase. Alternating between ±60° off-crest synchronous phases enables us to operate at half the peak acceleration gradient while also imparting strong confinement forces, ultimately extending interaction lengths up to 708 μm and achieving energy gains up to 23.7 ± 1.07 keV FWHM. We also highlight future directions for three-dimensional confinement, bunching, and quantum behavior of electrons in DLAs.
