Quantum interference observed in real time: Extreme UV-light spectroscopy technique

Chemical reactions are determined at their most fundamental level by their respective electronic structure and dynamics. Steered by a stimulus such as light irradiation, electrons rearrange themselves in liquids or solids. This process takes only a few hundred attoseconds, whereby one attosecond is the billionth part of a billionth of a second. Electrons are sensitive to external fields, so researchers can easily control them by irradiating the electrons with light pulses. As soon as they thus temporally shape the electric field of an attosecond pulse, researchers can control the electronic dynamics in real time. A team led by Prof. Dr. Giuseppe Sansone from the Institute of Physics at the University of Freiburg shows in the scientific journal Nature how they were able to completely shape the waveform of an attosecond pulse.

Temporally shaping the electric field of an attosecond pulse

Chemical reactions are determined at their most fundamental level by their respective electronic structure and dynamics. Steered by a stimulus such as light irradiation, electrons rearrange ...

Thu 13 Feb 20 from Phys.org

Attosecond pulse shaping using a seeded free-electron laser

Nature, Published online: 10 February 2020; doi:10.1038/s41586-020-2005-6Generation of intense attosecond waveforms with independently controllable amplitude and phase is performed ...

Mon 10 Feb 20 from Nature News

Electrons in rapid motion

Researchers observe quantum interferences in real-time using a new extreme ultra-violet light spectroscopy technique.

Fri 14 Feb 20 from ScienceDaily

Electrons in rapid motion, Fri 14 Feb 20 from Eurekalert

Shaping waveforms

Researchers have succeeded for the first time in temporally shaping the electric field of an attosecond pulse.

Thu 13 Feb 20 from Eurekalert

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