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Open Quantum Systems Decoherence Quantum Chemistry

Suppression of individual peaks in two-colour high harmonic generation

arXiv

Authors: Sambit Mitra, Shubhadeep Biswas, Johannes Schötz, Emilio Pisanty, Benjamin Förg, Gautam Aditya Kavuri, Christian Burger, William Okell, Maximilian Högner, Ioachim Pupeza, Vladimir Pervak, Maciej Lewenstein, Pawel Wnuk, Matthias F Kling

Year

2020

Paper ID

21843

Status

Preprint

Abstract Read

~2 min

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Abstract

This work investigates the suppression of individual harmonics, simultaneously affecting specific even and odd orders in the high-harmonic spectra generated by strongly tailored, two-colour, multi-cycle laser pulses in neon. The resulting spectra are systematically studied as a function of the electric-field shape in a symmetry-broken (ω-2ω) and symmetry-preserved (ω-3ω) configuration. The peak suppression is reproduced by macroscopic strong-field approximation calculations and is found to be unique to symmetry-broken fields (ω-2ω). Additionally, semi-classical calculations further corroborate the observation and reveal their underlying mechanism, where a nontrivial spectral interference between subsequent asymmetric half-cycles is found to be responsible for the suppression.

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This work investigates the suppression of individual harmonics, simultaneously affecting specific even and odd orders in the high-harmonic spectra generated by strongly...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2007.15450 [2] arXiv https://arxiv.org/abs/2007.15450 [3] Publisher https://arxiv.org/abs/2007.15450

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