Terahertz Oscilloscope for Recording Time Information of Ultrashort Electron Beams
Terahertz Oscilloscope for Recording Time Information of Ultrashort Electron Beams
We propose and demonstrate a terahertz (THz) oscilloscope for recording time information of an ultrashort electron beam. By injecting a laser-driven THz pulse with circular polarization into a dielectric tube, the electron beam is swept helically such that the time information is uniformly encoded into the angular distribution that allows …