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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 10$^{18}$ W=cm$^2$ by focusing 1 mJ, 25 fs laser pulses down to 1:7 $\mu$m 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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Submitted on : Monday, July 8, 2013 - 4:12:22 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 (8), pp.1461-1463. ⟨10.1364/ol.36.001461⟩. ⟨hal-00838479⟩



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