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Journal Article

Attosecond Real-Time Observation of Recolliding Electron Trajectories in Helium at Low Laser Intensities

MPS-Authors
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Heldt,  Tobias Valentin
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Birk,  Paul
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Borisova,  Gergana Dimitrova
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Ott,  Christian
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Pfeifer,  Thomas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

External Resource

https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.130.183201
(Publisher version)

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Citation

Heldt, T. V., Dubois, J., Birk, P., Borisova, G. D., Lando, G. M., Ott, C., et al. (2023). Attosecond Real-Time Observation of Recolliding Electron Trajectories in Helium at Low Laser Intensities. Physical Review Letters, 130(18): 183201. doi:10.1103/PhysRevLett.130.183201.


Cite as: https://hdl.handle.net/21.11116/0000-000D-145B-7
Abstract
Laser-driven recollision physics is typically accessible only at field intensities high enough for tunnel ionization. Using an extreme ultraviolet pulse for ionization and a near-infrared (NIR) pulse for driving of the electron wave packet lifts this limitation. This allows us to study recollisions for a broad range of NIR intensities with transient absorption spectroscopy, making use of the reconstruction of the time-dependent dipole moment. Comparing recollision dynamics with linear vs circular NIR polarization, we find a parameter space, where the latter favors recollisions, providing evidence for the so far only theoretically predicted recolliding periodic orbits.