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Journal Article

Quantum-beat Auger spectroscopy

MPS-Authors
/persons/resource/persons145788

Zhang,  Song Bin
Quantum Optics with X-Rays, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science (CFEL), 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;
Center for Free-Electron Laser Science (CFEL), 22761 Hamburg, Germany;

External Ressource
Fulltext (public)

PhysRevA.92.043420.pdf
(Publisher version), 820KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Zhang, S. B., & Rohringer, N. (2015). Quantum-beat Auger spectroscopy. Physical Review A, 92(4): 043420. doi:10.1103/PhysRevA.92.043420.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0029-05DB-9
Abstract
The concept of nonlinear quantum-beat pump-probe Auger spectroscopy is introduced by discussing a relatively simple four-level model system. We consider a coherent wave packet involving two low-lying states that was prepared by an appropriate pump pulse. This wave packet is subsequently probed by a weak, time-delayed probe pulse with nearly resonant coupling to a core-excited state of the atomic or molecular system. The resonant Auger spectra are then studied as a function of the duration of the probe pulse and the time delay. With a bandwidth of the probe pulse approaching the energy spread of the wave packet, the Auger yields and spectra show quantum beats as a function of pump-probe delay. An analytic theory for the quantum-beat Auger spectroscopy is presented, which allows for the reconstruction of the wave packet by analyzing the delay-dependent Auger spectra. The possibility of extending this method to a more complex manifold of electronic and vibrational energy levels is also discussed.