High-harmonic generation

Definition

Latest Research and Reviews

  • Research | | open

    Understanding excited carrier dynamics in semiconductors is central to the continued development of optoelectronic devices. Using extreme ultraviolet transient absorption spectroscopy, Zürch et al. directly and simultaneously observe ultrafast electron and hole dynamics in germanium thin films.

    • Michael Zürch
    • , Hung-Tzu Chang
    • , Lauren J. Borja
    • , Peter M. Kraus
    • , Scott K. Cushing
    • , Andrey Gandman
    • , Christopher J. Kaplan
    • , Myoung Hwan Oh
    • , James S. Prell
    • , David Prendergast
    • , Chaitanya D. Pemmaraju
    • , Daniel M. Neumark
    •  & Stephen R. Leone
  • Research |

    High-harmonic emission from crystalline silicon can be made ten times brighter by exploiting local plasmonic fields in arrays of nano-antennas.

    • G. Vampa
    • , B. G. Ghamsari
    • , S. Siadat Mousavi
    • , T. J. Hammond
    • , A. Olivieri
    • , E. Lisicka-Skrek
    • , A. Yu Naumov
    • , D. M. Villeneuve
    • , A. Staudte
    • , P. Berini
    •  & P. B. Corkum
  • Research | | open

    Few methods can produce orbital angular momentum beams in the extreme ultraviolet or X-ray, and controlling orbital angular momentum on these beams remains challenging. Here the authors apply wave mixing to a tabletop high-harmonic source and control the topological charge of extreme ultraviolet beams.

    • Fanqi Kong
    • , Chunmei Zhang
    • , Frédéric Bouchard
    • , Zhengyan Li
    • , Graham G. Brown
    • , Dong Hyuk Ko
    • , T. J. Hammond
    • , Ladan Arissian
    • , Robert W. Boyd
    • , Ebrahim Karimi
    •  & P. B. Corkum
  • Research | | open

    The controlled generation of extreme-ultraviolet beams with controllable topological charge has not been demonstrated. Here, Gauthier et al. report on the generation of extreme-ultraviolet optical vortices with femtosecond duration carrying a controllable amount of orbital angular momentum.

    • D. Gauthier
    • , P. Rebernik Ribič
    • , G. Adhikary
    • , A. Camper
    • , C. Chappuis
    • , R. Cucini
    • , L. F. DiMauro
    • , G. Dovillaire
    • , F. Frassetto
    • , R. Géneaux
    • , P. Miotti
    • , L. Poletto
    • , B. Ressel
    • , C. Spezzani
    • , M. Stupar
    • , T. Ruchon
    •  & G. De Ninno

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