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Título
Tunable Tesla-Scale Magnetic Attosecond Pulses through Ring-Current Gating.
Autor(es)
Materia
Ionization
Lasers
Magnetic properties
Quantum mechanics
Time dependant density functional theory
Fecha de publicación
2023-12
Editor
American Chemical Society
Citación
de las Heras, A., Bonafé, F. P., Hernández-García, C., Rubio, A., & Neufeld, O. (2023). Tunable Tesla-Scale Magnetic Attosecond Pulses through Ring-Current Gating. Journal of Physical Chemistry Letters, 11160-11167. https://doi.org/10.1021/acs.jpclett.3c02899
Resumen
[EN]Coherent control over electron dynamics in atoms and molecules using high-intensity circularly polarized laser pulses gives rise to current loops, resulting in the emission of magnetic fields. We propose, and demonstrate with ab initio calculations, “current-gating” schemes to generate direct or alternating-current magnetic pulses in the infrared spectral region, with highly tunable waveform and frequency, and showing femtosecond-to-attosecond pulse duration. In optimal conditions, the magnetic pulse can be highly isolated from the driving laser and exhibits a high flux density (∼1 T at a few hundred nanometers from the source, with a pulse duration of 787 attoseconds) for application in forefront experiments of ultrafast spectroscopy. Our work paves the way toward the generation of attosecond magnetic fields to probe ultrafast magnetization, chiral responses, and spin dynamics.
URI
ISSN
1948-7185
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