• Characterization of dielectric spheres by spiral imaging 

      Petrov, Dimitri; Rahuel, Nicolás; Molina Terriza, Gabriel; Torner Sabata, Lluís (2012)
      Article
      Accés obert
      We study the spiral spectra scattered off transparent dielectric spheres when probed by different Laguerre–Gaussian light beams, carrying nested topological wavefront dislocations. We show that such scattering data may ...
    • Generation of arbitrary complex quasi-non-diffracting optical patterns 

      Ortiz Ambriz, Antonio; López Aguayo, Servando; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Petrov, Dimitri; Garcia Gracia, Hipolito; Gutierrez Vega, Julio Cesar; Torner Sabata, Lluís (2013-09)
      Article
      Accés restringit per política de l'editorial
      Due to their unique ability to maintain an intensity distribution upon propagation, non-diffracting light fields are used extensively in various areas of science, including optical tweezers, nonlinear optics and quantum ...
    • Observation of azimuthal modulation instability and formation of patterns of optical solitons in a quadratic nonlinear crystal 

      Petrov, Dimitri; Torner Sabata, Lluís; Martorell Pena, Jordi; Vilaseca Alavedra, Ramon; Pérez Torres, Juan; Cojocaru, Crina (1998-09)
      Article
      Accés restringit per política de l'editorial
      We report what is believed to be the first experimental demonstration of the azimuthal self-breaking of intense beams containing a vortex phase dislocation into sets of optical spatial solitons in a quadratic nonlinear ...
    • Observation of optical vortex streets in walking-second harmonic generation 

      Molina Terriza, Gabriel; Petrov, Dimitri; Recolons Martos, Jaume; Torner Sabata, Lluís (OPTICAL SOC AMER - (OSA), 2002-04-30)
      Article
      Accés obert
    • Solitary-wave vortices in type II second-harmonic generation 

      Pérez Torres, Juan; Soto-Crespo, J M; Torner Sabata, Lluís; Petrov, Dimitri (1998-05)
      Article
      Accés restringit per política de l'editorial
      We find families of optical bright, vortex solitary waves in bulk quadratic nonlinear media under conditions for type II second-harmonic generation. We study the main properties of the families of solitary waves, including ...
    • Splitting of Light Beams with Phase dislocations into Solitons in Quadratic Nonlinear Media 

      Petrov, Dimitri; Santos Blanco, M. Concepción; Torner Sabata, Lluís (A. Hidalgo, 1997-05-31)
      Article
      Accés obert
      We investigate the propagation of intense light beams in bulk quadratic nonlinear crystals under conditions for second-harmonic generation. We show numerically that input light beams with a spiral phase front dislocation ...