A year ago, we looked at a TEM method that relied on spatially separated sources to enable single-shot, fs to ps temporal resolution of dynamic processes. This week, the arXiv contains a preprint discussing an rf-driven, TEM beam modulator which promises to yield GHz rep. rates with duty cycle on the order of 10%. The authors tout the fact that no fs lasers are required, and anticipate that this gives a simpler experimental setup, easily integrated with commercial TEM instruments.
Reference: Jiaqi Qiu, et al., “GHz Laser-free Time-resolved Transmission Electron Microscopy: a Stroboscopic High-duty-cycle Method”, arXiv:1508.03885