Applications of Radio Frequency Resonant Cavities in Ultrafast Electron Microscopy
Hogan, John Thomas
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Radio frequency resonant cavities are becoming important components in the emerging field of Ultrafast Electron Microscopy, which aspires to bring Dynamic Transmission Electron Microscopy into the realm of sub-nanometer spatial resolution combined with sub-picosecond time resolution. To accomplish this goal, the time-varying electromagnetic fields of resonant cavities can be utilized for temporal focusing of laser-driven ultrafast electron pulses to be used for imaging. In this thesis I present the design and construction of a laser-synchronized dielectric-filled radio frequency resonant cavity used for temporal focusing. I also present the theoretical groundwork, design, and construction of a second resonant cavity for the purposes of phase synchronization and direct electron pulse duration measurement.