Laser loops create ultrafast electric currents in solid materials

Nanowerk  September 15, 2021 An international team of researchers (Germany, Spain, USA – the Flatiron Institute) predicted that a unique laser source could produce highly controllable electric currents in any bulk material. They focused on an intense laser beam comprised of only low-energy photons, which incorporates two circularly-polarized carrier frequencies. The polarization of the electromagnetic field of this beam plots a distinct shape in space and time. The combination of the two colors leads to a double-loop motion that pushes electrons in the solid in various directions. Together with the intense beam, the double-loop laser light produces many photons which […]