All articles tagged with #attosecond
The article reports the first use of circularly polarized attosecond pulses to study and control chiral electron dynamics in molecules, revealing attosecond-scale control over photoelectron circular dichroism (PECD) and photoionization delays, with implications for understanding chiral phenomena and applications in spintronics and biosensing.
Attosecond pulses of light, which last for 0.000000000000000001 of a second, have revolutionized the study of electrons and chemical reactions. By generating attosecond light pulses, scientists can observe electron behavior in real time, allowing them to study processes such as the breaking of chemical bonds. This research has earned three physicists the 2023 Nobel Prize in physics. Attosecond spectroscopy has also provided insights into electron behavior in single molecules and has been applied to studying electron transfer in various materials. As researchers continue to improve their ability to generate attosecond light pulses, they will gain a deeper understanding of the fundamental particles that make up matter.
Physicists Anne L’Huillier, Pierre Agostini, and Ferenc Krausz have been awarded the 2023 Nobel Prize in Physics for their groundbreaking work in developing attosecond laser pulses, which allow for the observation of ultrafast electron motion. By producing flashes of light lasting mere attoseconds, billions of billions of times briefer than a second, researchers can directly detect the movement of electrons as they navigate atoms. This new method has opened doors to studying electrons and has potential applications in fields such as attochemistry and early cancer detection.
Attosecond pulses, which last for 0.000000000000000001 of a second, have revolutionized the study of electrons and chemical reactions. By providing shorter snapshots of atoms and molecules, attosecond spectroscopy has allowed researchers to understand electron behavior in single molecules, track the real-time breaking of chemical bonds, and study electron behavior in various materials. The ability to generate attosecond pulses has opened up new possibilities for studying the fundamental particles that make up matter.
Researchers have measured the quantum dynamics of electron emission from solids with attosecond precision using two-colour modulation spectroscopy of backscattering electrons. The experiment measured photoelectron spectra of electrons emitted from a sharp metallic tip as a function of the relative phase between the two colours. The emission duration was found to be 710 ± 30 attoseconds, opening the door to the precise active control of strong-field photoemission from solid state and other systems.