Suppression of individual peaks in two-colour high harmonic generation

Mitra S, Biswas S, Schoetz J, Pisanty E, Foerg B, Kavuri GA, Burger C, Okell W, Hoegner M, Pupeza , Pervak , Lewenstein M, Wnuk P, Kling MF (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Journal of Physics B: Atomic, Molecular and Optical Physics

Book Volume: 53

Article Number: 134004

Journal Issue: 13

DOI: 10.1088/1361-6455/ab859c

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.

Involved external institutions

Max-Planck-Institute of Quantum Optics (MPQ) / Max-Planck-Institut für Quantenoptik DE Germany (DE) Autonomous University of Barcelona (UAB) / Universitat Autònoma de Barcelona ES Spain (ES)

How to cite

APA:

Mitra, S., Biswas, S., Schoetz, J., Pisanty, E., Foerg, B., Kavuri, G.A.,... Kling, M.F. (2020). Suppression of individual peaks in two-colour high harmonic generation. Journal of Physics B: Atomic, Molecular and Optical Physics, 53(13). https://doi.org/10.1088/1361-6455/ab859c

MLA:

Mitra, Sambit, et al. "Suppression of individual peaks in two-colour high harmonic generation." Journal of Physics B: Atomic, Molecular and Optical Physics 53.13 (2020).

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