Pulses of electrons (green, coming from the left) impinge on a micro-structured antenna which is powered by laser-generated terahertz radiation (red). The interaction compresses the duration of the electron pulses to a few femtoseconds. Graphics: Christian Hackenberger
With the aid of terahertz radiation, Munich physicists have developed a method for generating and controlling ultrashort electron pulses. With further improvements, this technique should be capable of capturing even electrons in motion. Seeing how atoms and electrons in a material respond to external stimuli can give scientists insight into unsolved problems in solid-state physics, such as the basis for high-temperature superconductivity and the many intriguing properties of other exotic materials.
Short pulses of electrons ...
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