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

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....

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Bibliographic Details
Published in:Physical review letters 2013-02, Vol.110 (5), p.053001-053001, Article 053001
Main Authors: Pérez-Hernández, J A, Ciappina, M F, Lewenstein, M, Roso, L, Zaïr, A
Format: Article
Language:English
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.110.053001