Karl Franzens University Graz | Graz University of Technology | |
Field-resolved microscopy: true time-domain views of light-matter interaction Video: https://tugraz.webex.com/meet/schultze When charged particles move, they inscribe a history of their motion into an electromagnetic field, which carries it away from the origin. Recording various aspects of this light has been one of our main ways of investigating the fundamentals of nature for centuries, but directly observing the waveform has only become possible thanks to recent advances in ultrafast technology. Now, several techniques have allowed us to record light waves with sub-cycle time resolution, even oscillations on the petahertz scale. An especially attractive technique is electro-optic sampling (EOS) -- long a staple of the terahertz range, which offers a spectacular degree of sensitivity across many octaves of bandwidth. |