Abstract
The collinear generation of sub-4 fs ultraviolet (UV) and attosecond extreme ultraviolet (XUV) pulses via subsequent third-harmonic and high harmonic generation in noble gases is demonstrated. The ultrashort coherent light bursts are produced by focusing a sub-1.5 cycle near-infrared/visible (NIR) laser pulse in two subsequent quasi-static noble gas targets. With this simple approach, inherently synchronized UV pulsed radiation with a photon energy of ~5 eV and a pulse energy of ~1 μJ, and XUV pulses with a cut-off photon energy of more than 120 eV and up to ~107 XUV photons can be generated. This source represents a novel tool for future UV pump/XUV probe experiments with unprecedented time-resolution.
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Bothschafter, E., Schiffrin, A., Krausz, F. et al. Collinear generation of ultrashort UV and XUV pulses for pump/probe spectroscopyCollinear generation of ultrashort UV and XUV pulses for pump/probe spectroscopyCollinear generation of ultrashort UV and XUV pulses for pump/probe spectroscopyCollinear generation of ultrashort UV and XUV pulses for pump/probe spectroscopy. MRS Online Proceedings Library 1230, 102 (2009). https://doi.org/10.1557/PROC-1230-MM01-02
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DOI: https://doi.org/10.1557/PROC-1230-MM01-02