Photographing a light helix

12 Jul 2022

With their newly developed "nanoTIPTOE" technique, physicists from LMU and the Max Planck Institute of Quantum Optics managed for the first time to record a helical light field on shortest time and length scales.

It has been known since the end of the 19th century that light is an electromagnetic wave, whereby its frequency determines its color. With around one quadrillion oscillations per second, light oscillates so quickly that it was not until the beginning of the 21st century that methods were developed to measure the temporal evolution of its field directly.


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