University of Bayreuth, Press Release No. 009/2022, 19. 01. 2022
From Heinrich Hertz to Terahertz: Ultrafast video camera for electric fields
Today, high-tech applications in optoelectronics work with ultrafast electrical oscillations, reaching frequencies up to the terahertz range. A team from the Universities of Bayreuth and Melbourne has now succeeded in developing a microscope that records videos of these oscillations. The glow of semiconductor nanocrystals makes visible the previously hidden electric fields that drive ultrafast electrical components. The researchers present their discovery in the journal Light: Science & Applications. The microscope could be used to observe the driving fields of nanocircuits in operation.
Prof. Dr. Georg Herink, last author of the new study (left), and first author Moritz Heindl M.Sc. (right) at the microscopy setup in the laboratory for ultrafast dynamics at the university of Bayreuth Photo: AG Herink.
UBT
napshots from a microscopy video resolve a single oscillation of the electric field in a microstructure. Photo: Moritz Heindl
Ultrafast terahertz microscopy uses luminous nanocrystals to visualize near-field electric fields. Photo: Moritz Heindl