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  1. link.aps.org

    We identify and explore a high orbital angular momentum (OAM) harmonics generation and amplification mechanism that manipulates the OAM independently of any other laser property, by preserving the initial laser wavelength, through stimulated Raman backscattering in a plasma. The high OAM harmonics spectra can extend at least up to the limiting value imposed by the paraxial approximation. We ...
    Author:J. Vieira, R. M. G. M. Trines, E. P. Alves, R. A. Fonseca, R. A. Fonseca, J. T. Mendonça, R. Bingham...Published:2016
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  3. Here, Gauthieret al. report on the generation of extreme-ultraviolet optical vortices with femtosecond duration carrying a controllable amount of orbital angular momentum.
    Author:D Gauthier, P Rebernik Ribič, G Adhikary, A Camper, C Chappuis, R Cucini, L F DiMauro, G Dovillaire,...Published:2017
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  5. Angular momentum is a fundamental property of the photon, together with energy and linear momentum. In paraxial conditions, angular momentum may be split into an intrinsic part, the spin angular momentum, and an extrinsic part called orbital angular momentum (OAM). Macroscopically,
    Author:D Gauthier, G Dovillaire, R Géneaux, C Spezzani, L Poletto, G Adhikary, B Ressel, A Camper, G De Nin...Published:2016
  6. ARTICLE Received 25 Jan 2017 | Accepted 17 Feb 2017 | Published 5 Apr 2017 Tunable orbital angular momentum in high-harmonic generation D. Gauthier1, P. Rebernik ...
    Author:D Gauthier, P Rebernik Ribič, G Adhikary, A Camper, C Chappuis, R Cucini, L F DiMauro, G Dovillaire,...Published:2017
  7. We identify and explore a high orbital angular momentum (OAM) harmonics generation and amplification mechanism that manipulates the OAM independently of any other laser property, by preserving the initial laser wavelength, through stimulated Raman backscattering in a plasma. The high OAM harmonics spectra can extend at least up to the limiting value imposed by the paraxial approximation. We ...
  8. Aug 2, 2024Here, we show structured high-harmonic generation linked to the anisotropic symmetry of a solid. By strategically preserving a dynamical symmetry arising from the spin-orbit interaction of light, we generate multiple orbital angular momentum states in high-order harmonics.
  9. pubmed.ncbi.nlm.nih.gov

    We identify and explore a high orbital angular momentum (OAM) harmonics generation and amplification mechanism that manipulates the OAM independently of any other laser property, by preserving the initial laser wavelength, through stimulated Raman backscattering in a plasma. ... High Orbital Angular Momentum Harmonic Generation Phys Rev Lett ...
  10. link.aps.org

    High harmonic generation (HHG) with longitudinal optical orbital angular momentum has attracted much attention over the past decade. Here, we present the first study on the HHG with transverse orbital angular momentum driven by the spatiotemporal optical vortex (STOV) pulses. We show that the produced spatial-resolved harmonic spectra reveal unique structures, such as the spatially spectral ...
  11. pubmed.ncbi.nlm.nih.gov

    These light beams, which carry orbital angular momentum (OAM), have been successfully utilized in the visible and infrared in a wide variety of applications. ... Tunable orbital angular momentum in high-harmonic generation Nat Commun. 2017 Apr 5:8:14971. doi: 10.1038/ncomms14971. Authors D Gauthier 1 , P Rebernik Ribi č 1 , G Adhikary 2 ...
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