Ara es mostren els items 29-32 de 32

    • Vortex evolution in parametric wave mixing 

      Petrov, D V; Molina Terriza, Gabriel; Torner Sabata, Lluís (1999-04)
      Article
      Accés obert
      We investigate the evolution of vortex wave front dislocations in multiple-wave second-harmonic generation processes in quadratic nonlinear media. Vortices nested in finite-size host beams are shown to nucleate and to ...
    • Vortex nucleation and evolution in parametric wave mixing 

      Molina Terriza, Gabriel; Torner Sabata, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      We predict a variety of new phenomena, that includes the spontaneous nucleation of multiple vortex twins, vortex rotation and drift, vortex-antivortex interaction and annihilation, and formation of quasi-aligned patterns ...
    • Vortex revivals with trapped light 

      Molina Terriza, Gabriel; Torner Sabata, Lluís; Wright, E M; Garcia Ripoll, Juan José; Perez García, Victor M. (2001-10)
      Article
      Accés restringit per política de l'editorial
      We predict that vortex dipoles nested in light beams trapped in graded-index media can undergo closed Berry trajectories, yielding periodic vortex annihilations and revivals along the light-propagation direction. The vortex ...
    • Vortex streets in walking parametric wave mixing 

      Molina Terriza, Gabriel; Torner Sabata, Lluís; Petrov, D V (1999-07)
      Article
      Accés restringit per política de l'editorial
      The combined effects of diffraction and Poynting vector walk-off in second-harmonic generation with pump beams that contain screw phase dislocations is addressed for what is believed to be the first time. We predict the ...