NanoMi: A modular platform for terahertz-integrated UTEM

Ultrafast electron microscopy techniques allow for the structural dynamics of materials to be studied, and are typically achieved by modifying a commercial electron microscope to grant optical access to both the cathode and sample regions. To enhance the temporal resolution of these techniques, the electron bunch probe can be compressed by intense terahertz pulses confined in a tapered waveguide structure. The necessary modifications for optical access and waveguide integration may not be viable on all commercial systems, and has the potential to compromise the column. NanoMi is an open-source, modular electron microscopy platform that is highly amenable to customization, making it ideal for establishing ultrafast functionality in addition to exploring terahertz-electron interactions.