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arXiv · 1207.4653

Beyond Carbon K-edge harmonic emission using spatial and temporal synthesized laser field

J. A. Pérez-Hernández·M. F. Ciappina·M. Lewenstein·L. Roso·A. Zaïr
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Abstract

We present numerical simulations of high-order harmonic generation in helium using a temporally synthesised and spatially non-homogeneous strong laser field. The combination of temporal and spatial laser field synthesis results in a dramatic cut-off extension far beyond the usual semiclassical limit. Our predictions are based on the convergence of three complementary approaches: resolution of the three dimensional Time Dependent Schr\"odinger Equation, time-frequency analysis of the resulting dipole moment and classical trajectories extraction. Employing a combination of temporally and spatially synthesised laser field provides coherent XUV photons beyond the carbon K-edge which is of high interest for initiating inner-shell dynamics and study time-resolved intra-molecular attosecond spectroscopy.

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J. A. Pérez-Hernández, M. F. Ciappina, M. Lewenstein, L. Roso, A. Zaïr. 2012-07-19. Beyond Carbon K-edge harmonic emission using spatial and temporal synthesized laser field. https://doi.org/10.1103/physrevlett.110.053001

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