Microstructure-based laser-driven free-electron laser

We propose an all-dielectric laser-driven undulator. This undulator consists of laser-driven deflection structures where the deflection force from the laser is phase-synchronous with the electron beam. This allows for an undulator period that is much greater than the laser wavelength. Due to the possibility of high peak electric fields from ultra-short pulse lasers on dielectric materials, the proposed undulator is expected to produce phase-synchronous GV/m deflection fields on a relativistic electron bunch and therefore lead to a very compact free-electron-based radiation device.