Sensing light

21 Feb 2022

Physicists of the attoworld-team at Ludwig-Maximilians-Universität have uncovered what happens during the sampling of a light field. This helped them increase the sensitivity of the measurement by up to one order of magnitude.

Future electronics will be fast. It could be driven at the frequencies of light waves. This implies that the switching speeds would be roughly 100,000 times faster than today. The development of electronics driven by light requires a detailed characterization of the light waves’s electromagnetic fields. Modern so-called field-sampling methods allow for probing the temporal evolution of a light field. While these techniques have been established, a complete and detailed understanding of their underlying mechanism has been lacking. Now, an international team at the Ludwig-Maximilians-Universität München (LMU), under the leadership of Prof. Matthias Kling and Dr. Boris Bergues, has uncovered what exactly happens during the sampling of light fields and how their interaction with matter induces measurable currents in electronic circuits.

Read the original publication here:

Nature Communications, Volume 13, Article number: 962 (2022)

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