Journal
PHYSICAL REVIEW LETTERS
Volume 110, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.053001
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Funding
- Spanish MINECO through the Consolider Program SAUUL [CSD2007-00013]
- Junta de Castilla y Leon through the Program for Groups of Excellence [FIS2009-09522]
- ERC [228334]
- Junta de Castilla y Leon [CLP421A12-1]
- MINCIN [FIS2008-00784 TOQATA]
- ERC Advanced Grant QUAGATUA
- Alexander von Humboldt Foundation
- UK EPSRC [EP/J002348/1]
- EPSRC [EP/J002348/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/J002348/1, 1228248] Funding Source: researchfish
- ICREA Funding Source: Custom
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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 Schrodinger 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. DOI: 10.1103/PhysRevLett.110.053001
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