Berlin 2014 – scientific programme

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A: Fachverband Atomphysik

A 47: Attosecond physics

A 47.8: Talk

Thursday, March 20, 2014, 18:15–18:30, BEBEL E42

Role of higher order return trajectories in continuum-continuum harmonic generation — •Hossein Ebadi — Structural dynamics of (bio)chemical Systems, MPI-BPC, Am Fassberg 11, 37077 Goettingen, Germany

High harmonic generation has been numerically analyzed. A clear contribution of those quantum orbits with higher order return to the target potential has been observed in the continuum-continuum harmonic generation [1]. This occurs via interference of their associated wave-packets. In the barrier suppression ionization regime, the role of the trajectories with return order higher than one can be dominant at certain intensity. An empirical method [2] has been introduced to estimate the impact of different return order trajectories at certain emission time. [1] M.C. Kohler, C. Ott, P. Raith, R. Heck, I. Schlegel, C.H. Keitel, T. Pfeifer, Phys. Rev. Lett., 105, 203902 (2010). [2] D. Bauer, P. Mulser Phys. Rev. A, 59 , 569 (1999).