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High-harmonic generation from plasma mirrors at kilohertz repetition rate

Abstract : We report the first demonstration of high-harmonic generation from plasma mirrors at a 1 kHz repetition rate. Harmonics up to nineteenth order are generated at peak intensities close to 1018 W/cm2 by focusing 1 mJ , 25 fs laser pulses down to 1.7 μm FWHM spot size without any prior wavefront correction onto a moving target. We minimize target surface motion with respect to the laser focus using online interferometry to ensure reproducible interaction conditions for every shot and record data at 1 kHz with unprecedented statistics. This allows us to unambiguously identify coherent wake emission as the main generation mechanism.
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https://hal-cea.archives-ouvertes.fr/cea-00853647
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Submitted on : Friday, August 23, 2013 - 10:20:27 AM
Last modification on : Tuesday, October 6, 2020 - 4:26:40 PM

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Antonin Borot, Arnaud Malvache, Xiaowei Chen, Denis Douillet, Grégory Iaquianiello, et al.. High-harmonic generation from plasma mirrors at kilohertz repetition rate. Optics Letters, Optical Society of America - OSA Publishing, 2011, 36, pp.1461-1463. ⟨10.1364/OL.36.001461⟩. ⟨cea-00853647⟩

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