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Journal Article

Attosecond photoionization dynamics with stimulated core-valence transitions

MPS-Authors
/persons/resource/persons193066

You,  Jhih-An
Quantum Optics with X-Rays, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;
Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany;

/persons/resource/persons145791

Rohringer,  Nina
Quantum Optics with X-Rays, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;
Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany;

/persons/resource/persons184437

Dahlström,  Jan Marcus
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;
Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany;
Department of Physics, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm, Sweden;

External Resource

http://dx.doi.org/10.1103/PhysRevA.93.033413
(Publisher version)

http://arxiv.org/abs/1508.00760
(Preprint)

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Fulltext (public)

PhysRevA.93.033413.pdf
(Publisher version), 687KB

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Citation

You, J.-A., Rohringer, N., & Dahlström, J. M. (2016). Attosecond photoionization dynamics with stimulated core-valence transitions. Physical Review A, 93(3): 033413. doi:10.1103/PhysRevA.93.033413.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002A-3B01-2
Abstract
We investigate ionization of neon atoms by an isolated attosecond pump pulse in the presence of two coherent extreme ultraviolet or x-ray probe fields. The probe fields are tuned to a core-valence transition in the residual ion and induce spectral shearing of the photoelectron distributions. We show that the photoelectron-ion coincidence signal contains an interference pattern that depends on the temporal structure of the attosecond pump pulse and the stimulated core-valence transition. Many-body perturbation theory is used to compute “atomic response times” for the processes and we find strikingly different behavior for stimulation to the outer-core hole (2p ↔ 2s) and stimulation to the inner-core hole (2p ↔ 1s). The response time of the inner-core transition is found to be comparable to that of state-of-the-art laser-based characterization techniques for attosecond pulses.