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

J. A. Pérez-Hernández*, M. F. Ciappina, M. Lewenstein, L. Roso, A. Zaïr

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

100 Scopus citations

Abstract

We present numerical simulations of high-order harmonic generation in helium using a temporally synthesized and spatially nonhomogeneous strong laser field. The combination of temporal and spatial laser field synthesis results in a dramatic cutoff 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 Schrödinger equation, time-frequency analysis of the resulting dipole moment, and classical trajectory extraction. A laser field synthesized both spatially and temporally has been proven capable of generating coherent extreme ultraviolet photons beyond the carbon K edge, an energy region of high interest as it can be used to initiate inner-shell dynamics and study time-resolved intramolecular attosecond spectroscopy.

Original languageEnglish
Article number053001
JournalPhysical Review Letters
Volume110
Issue number5
DOIs
StatePublished - 28 Jan 2013

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