Spectral interferometry with waveform-dependent relativistic high-order harmonics from plasma surfaces

Dmitrii Kormin, Antonin Borot, Guangjin Ma, William Dallari, Boris Bergues, Márk Aladi, István B. Földes and Laszlo Veisz ()
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Dmitrii Kormin: Max-Planck-Institut für Quantenoptik
Antonin Borot: Max-Planck-Institut für Quantenoptik
Guangjin Ma: Peking University
William Dallari: Max-Planck-Institut für Quantenoptik
Boris Bergues: Max-Planck-Institut für Quantenoptik
Márk Aladi: Hungarian Academy of Sciences
István B. Földes: Hungarian Academy of Sciences
Laszlo Veisz: Max-Planck-Institut für Quantenoptik

Nature Communications, 2018, vol. 9, issue 1, 1-8

Abstract: Abstract The interaction of ultra-intense laser pulses with matter opened the way to generate the shortest light pulses available nowadays in the attosecond regime. Ionized solid surfaces, also called plasma mirrors, are promising tools to enhance the potential of attosecond sources in terms of photon energy, photon number and duration especially at relativistic laser intensities. Although the production of isolated attosecond pulses and the understanding of the underlying interactions represent a fundamental step towards the realization of such sources, these are challenging and have not yet been demonstrated. Here, we present laser-waveform-dependent high-order harmonic radiation in the extreme ultraviolet spectral range supporting well-isolated attosecond pulses, and utilize spectral interferometry to understand its relativistic generation mechanism. This unique interpretation of the measured spectra provides access to unrevealed temporal and spatial properties such as spectral phase difference between attosecond pulses and field-driven plasma surface motion during the process.

Date: 2018
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DOI: 10.1038/s41467-018-07421-5

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