Enviaments recents

  • Quadratic spatial solitons in periodically poled KTiOPO4 

    Kim, H; Jankovic, L; Stegeman, G I; Carrasco Rodríguez, Sílvia; Torner Sabata, Lluís; Eger, D; Katz, M (2003-04)
    Article
    Accés restringit per política de l'editorial
    The evolution of fundamental beams into quadratic spatial solitons was investigated in a periodically poled bulk KTiOPO4 crystal near and at phase matching. Various soliton properties, such as trapping efficiency as a ...
  • Properties of quadratic multi-soliton generation near phase-match in PPKTP 

    Polyakov, S; Jankovic, L; Kim, H; Stegeman, G; Carrasco Rodríguez, Sílvia; Torner Sabata, Lluís; Katz, M (2003-06)
    Article
    Accés restringit per política de l'editorial
    The properties of the multi-quadratic-soliton generation process have been investigated both theoretically and experimentally near and on phase-match in non-critically-phase-matched, periodically poled, potassium titanyl ...
  • Cnoidal wave patterns in quadratic nonlinear media 

    Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2003-07)
    Article
    Accés restringit per política de l'editorial
    We report the existence of whole families of stationary cnoidal, periodic wave patterns in quadratic nonlinear media. We study the main physical features of the multicolored light patterns, including their shape, contrast, ...
  • Two-dimensional cnoidal waves in Kerr--type saturable nonlinear media 

    Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2003-07)
    Article
    Accés restringit per política de l'editorial
    We report theoretically the existence, classification, and basic properties of families of stationary two-dimensional cnoidal-type waves in bulk Kerr-type saturable nonlinear media. The families of two-dimensional cnoidal-type ...
  • Simultaneous frequency conversion and beam shaping for optical-tweezers applications 

    Molina Terriza, Gabriel; Torner Sabata, Lluís; Minardi, S; Trapani, P Di (2003-07)
    Article
    Accés restringit per política de l'editorial
    We review a method which allows the simultaneous frequency-conversion and shaping of a light beam into a variety of patterns. The method is based on the controllable dynamics of vortices nested in the light beams. We outline ...
  • Arresting wave collapse by wave self-rectification 

    Crasovan, L C; Pérez Torres, Juan; Mihalache, Dumitru; Torner Sabata, Lluís (2003-08)
    Article
    Accés restringit per política de l'editorial
    We put forward a mechanism for tailoring, and even arresting, the collapse of wave packets in nonlinear media, whose dynamics is governed by nonlocal two-dimensional nonlinear Schrödinger-like equations. The key ingredient ...
  • Deflection of quadratic solitons at edge dislocations 

    Petrov, D V; Carrasco Rodríguez, Sílvia; Molina Terriza, Gabriel; Torner Sabata, Lluís (2003-08)
    Article
    Accés restringit per política de l'editorial
    We report the observation of deflection of optical solitons generated in the frequency doubling of light beams containing edgelike topological amplitude and phase dislocations. The angular deflection of the solitons was ...
  • Complex soliton-like pattern generation in potassium niobate due to noisy, high intensity, input beams 

    Jankovic, L; Polyakov, S; Stegeman, G; Carrasco Rodríguez, Sílvia; Torner Sabata, Lluís; Bosshard, Ch; Gunter, P (2003-09)
    Article
    Accés restringit per política de l'editorial
    We report the generation of complex soliton-like patterns in non-critically-phase-matched potassium niobate which occur in random spatial patterns from shot-to-shot. Up to five spots have been generated at input intensities ...
  • Robust soliton clusters in media with competing cubic and quintic nonlinearities 

    Mihalache, Dumitru; Mazilu, D; Crasovan, L.C.; Malomed, Boris A.; Lederer, F; Torner Sabata, Lluís (2003-10)
    Article
    Accés restringit per política de l'editorial
    Systematic results are reported for dynamics of circular patterns (“necklaces”), composed of fundamental solitons and carrying orbital angular momentum, in the two-dimensional model, which describes the propagation of light ...
  • Metastability of dark snoidal-type waves in quadrayic nonlinear media 

    Kartashov, Yaroslav V.; Egorov, A A; Zelenina, A S; Vysloukh, Victor A.; Torner Sabata, Lluís (2003-11)
    Article
    Accés restringit per política de l'editorial
    We report the existence and basic properties of dark snoidal-type waves self-sustained in quadratic nonlinear media. Using a stability analysis technique, we reveal that they are almost completely stable, or metastable, ...

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