Hannover 2016 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 8: Atomic systems in external fields II

A 8.6: Vortrag

Montag, 29. Februar 2016, 15:45–16:00, f303

A semi-analitycal description of high-harmonic generation in inhomogeneous fields — •Carlos Zagoya Montiel, Matt Bonner, Emma Slade, and Carla Figueira de Morisson Faria — University College London

In this work, we perform a semi-analytical study of the high-order harmonic generation phenomenon in inhomogeneous media. In particular, we analyse how the inhomogeinity influences the spectrum and give an explanation for the harmonics appearing beyond the usual cutoff for homogeneous media. This is managed by employing windowed Fourier transforms and ensembles of classical trajectories. Furthermore, by neglecting the atomic core and considering the inhomogeinity parameter to be small, an analytical expression for the classical returning times can found which result to be in a good agreement with the numerical results.