Propagation-enhanced generation of intense high-harmonic continua in the 100-eV spectral region

D. E. Rivas, B. Major, M. Weidman, W. Helml, G. Marcus, R. Kienberger, D. Charalambidis, P. Tzallas, E. Balogh, K. Kovács, V. Tosa, B. Bergues, K. Varjú, L. Veisz

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The study of core electron dynamics through nonlinear spectroscopy requires intense isolated attosecond extreme ultraviolet or even X-ray pulses. A robust way to produce these pulses is high-harmonic generation (HHG) in a gas medium. However, the energy upscaling of the process depends on a very demanding next-generation laser technology that provides multi-terawatt (TW) laser pulses with few-optical-cycle duration and controlled electric field. Here, we revisit the HHG process driven by 16-TW sub-two-cycle laser pulses to reach high intensity in the 100-eV spectral region and beyond. We show that the combination of above barrier-suppression intensity with a long generation medium significantly enhances the isolation of attosecond pulses compared to lower intensities and/or shorter media and this way reduces the pulse duration as well as field-stability requirements on the laser driver. This novel regime facilitates the real-time observation of electron dynamics at the attosecond timescale in atoms, molecules, and solids.

Original languageEnglish
Pages (from-to)1283-1289
Number of pages7
JournalOptica
Volume5
Issue number10
DOIs
Publication statusPublished - Oct 20 2018

Fingerprint

Harmonic generation
Laser pulses
continuums
harmonics
propagation
Electrons
Lasers
pulses
Gases
Electric fields
Spectroscopy
lasers
harmonic generations
X rays
Atoms
Molecules
cycles
isolation
pulse duration
electrons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this

Rivas, D. E., Major, B., Weidman, M., Helml, W., Marcus, G., Kienberger, R., ... Veisz, L. (2018). Propagation-enhanced generation of intense high-harmonic continua in the 100-eV spectral region. Optica, 5(10), 1283-1289. https://doi.org/10.1364/OPTICA.5.001283

Propagation-enhanced generation of intense high-harmonic continua in the 100-eV spectral region. / Rivas, D. E.; Major, B.; Weidman, M.; Helml, W.; Marcus, G.; Kienberger, R.; Charalambidis, D.; Tzallas, P.; Balogh, E.; Kovács, K.; Tosa, V.; Bergues, B.; Varjú, K.; Veisz, L.

In: Optica, Vol. 5, No. 10, 20.10.2018, p. 1283-1289.

Research output: Contribution to journalArticle

Rivas, DE, Major, B, Weidman, M, Helml, W, Marcus, G, Kienberger, R, Charalambidis, D, Tzallas, P, Balogh, E, Kovács, K, Tosa, V, Bergues, B, Varjú, K & Veisz, L 2018, 'Propagation-enhanced generation of intense high-harmonic continua in the 100-eV spectral region', Optica, vol. 5, no. 10, pp. 1283-1289. https://doi.org/10.1364/OPTICA.5.001283
Rivas DE, Major B, Weidman M, Helml W, Marcus G, Kienberger R et al. Propagation-enhanced generation of intense high-harmonic continua in the 100-eV spectral region. Optica. 2018 Oct 20;5(10):1283-1289. https://doi.org/10.1364/OPTICA.5.001283
Rivas, D. E. ; Major, B. ; Weidman, M. ; Helml, W. ; Marcus, G. ; Kienberger, R. ; Charalambidis, D. ; Tzallas, P. ; Balogh, E. ; Kovács, K. ; Tosa, V. ; Bergues, B. ; Varjú, K. ; Veisz, L. / Propagation-enhanced generation of intense high-harmonic continua in the 100-eV spectral region. In: Optica. 2018 ; Vol. 5, No. 10. pp. 1283-1289.
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