Tunable generation of high-order harmonics by IR and THz fields

K. Kovács, E. Balogh, V. Toşa, K. Varjú

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We numerically investigate high-order harmonic generation where a properly tailored THz pulse assists the process of regular HHG in a static cell. The strong IR pulse (800 nm, 20 fs, 0.16-0.3 mJ pulse energy) propagates along the cell while the assisting THz pulse illuminates the cell laterally. We demonstrate that the phase mismatch can be compensated during propagation and the macroscopic cutoff can be extended up to the single-dipole cutoff. The amplified spectral domain can be controlled by adjusting the IR pulse energy and the THz pulse parameters. We obtain two orders of magnitude increase in the harmonic efficiency in the cutoff region (150-200 eV), in a quasi-phasematching regime.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages117-121
Number of pages5
Volume1565
DOIs
Publication statusPublished - 2013
Event9th International Conference on Processes in Isotopes and Molecules, PIM 2013 - Cluj Napoca
Duration: Sep 25 2013Sep 27 2013

Other

Other9th International Conference on Processes in Isotopes and Molecules, PIM 2013
CityCluj Napoca
Period9/25/139/27/13

Fingerprint

harmonics
pulses
cut-off
cells
harmonic generations
adjusting
dipoles
propagation
energy

Keywords

  • high-harmonic generation
  • numerical simulation
  • quasi-phase-matching
  • THz pulse

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kovács, K., Balogh, E., Toşa, V., & Varjú, K. (2013). Tunable generation of high-order harmonics by IR and THz fields. In AIP Conference Proceedings (Vol. 1565, pp. 117-121) https://doi.org/10.1063/1.4833709

Tunable generation of high-order harmonics by IR and THz fields. / Kovács, K.; Balogh, E.; Toşa, V.; Varjú, K.

AIP Conference Proceedings. Vol. 1565 2013. p. 117-121.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kovács, K, Balogh, E, Toşa, V & Varjú, K 2013, Tunable generation of high-order harmonics by IR and THz fields. in AIP Conference Proceedings. vol. 1565, pp. 117-121, 9th International Conference on Processes in Isotopes and Molecules, PIM 2013, Cluj Napoca, 9/25/13. https://doi.org/10.1063/1.4833709
Kovács K, Balogh E, Toşa V, Varjú K. Tunable generation of high-order harmonics by IR and THz fields. In AIP Conference Proceedings. Vol. 1565. 2013. p. 117-121 https://doi.org/10.1063/1.4833709
Kovács, K. ; Balogh, E. ; Toşa, V. ; Varjú, K. / Tunable generation of high-order harmonics by IR and THz fields. AIP Conference Proceedings. Vol. 1565 2013. pp. 117-121
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