Berlin 2014 – scientific programme

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A: Fachverband Atomphysik

A 15: Poster: Interaction with strong or short laser pulses

A 15.18: Poster

Monday, March 17, 2014, 16:30–18:30, Spree-Palais

Photoelectrons close to threshold — •Elias Diesen, Ulf Saalmann, and Jan-Michael Rost — Max Planck Institute for the Physics of Complex Systems, Dresden, Germany

The 2009 discovery of the low energy structure (LES) [1] of photoionization spectra in the long-wavelength, high-intensity tunneling regime spurred a large experimental and theoretical activity in the last years. The role of classical so-called soft recollisions was investigated in [2,3]. Recent experiments at unprecedented resolution reveal more spectral features [4] above and below threshold, whose explanation is not yet complete. We present theoretical results on the formation of these features that typically appear at energies well below 1 eV.

[1] Blaga et al, Nature Phys., 5, 335 (2009)

[2] Kästner et al, Phys. Rev. Lett. 108, 033201 (2012)

[3] Kästner et al, J. Phys. B 45, 074011 (2012)

[4] Dura et al, Sci. Rep. 3, 2675 (2013)