• Beam steering by x(2) trapping 

    Torner Sabata, Lluís; Torruellas, William; Stegeman, George; Menyuk, Curtis (1995-09)
    Article
    Accés restringit per política de l'editorial
    We show numerically the mutual dragging and locking together of intense fundamental and second-harmonic light beams propagating in second-order nonlinear media, and we discuss the potential applications of such effects for ...
  • Bright solitons with second-order nonlinearities 

    Torner Sabata, Lluís; Menyuk, Curtis; Stegeman, George (1995-05)
    Article
    Accés restringit per política de l'editorial
    We investigate the mutual trapping of intense fundamental and second-harmonic waves propagating in materials with second-order nonlinearity. Consistent with Menyuk’s robustness hypothesis of solitons, we numerically observe ...
  • Excitation of solitons with cascaded x(2) nonlinearities 

    Torner Sabata, Lluís; Menyuk, Curtis; Stegeman, George (1994-10)
    Article
    Accés restringit per política de l'editorial
    Mutual trapping of the fundamental and second-harmonic waves propagating in a material with cascaded second-order nonlinearity is investigated. Formation of solitonlike waves under a variety of excitation conditions is ...
  • Observation of mutual trapping and dragging of two-dimensional spatial solitary waves in a quadratic medium 

    Torruellas, William; Wang, Zou; Torner Sabata, Lluís; Stegeman, George (1995-09)
    Article
    Accés restringit per política de l'editorial
    We report experimental evidence for trapping of two-dimensional (2 + 1) spatial solitary waves in a KTP crystal resulting from its second-order nonlinearity. In addition, dragging of the solitary beams is observed as a ...
  • Observation of self-focusing of light mediated by cubic nonlinearities in potassium titanyl phosphate 

    Carrasco Rodríguez, Sílvia; Kim, Hongki; Stegeman, George; Loza Alvarez, Pablo; Torner Sabata, Lluís (2002-11)
    Article
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    We report our observations of the transient self-narrowing of light beams mediated by dominant Kerr nonlinearities and two-photon absorption in a bulk potassium titanyl phosphate crystal near conditions for second-harmonic ...
  • Second-harmonic generation tuning curves with narrow, high-intensity beams for quasiphase-matched potassium titanyl phosphate 

    Kim, Hongki; Jankovic, Ladislav; Stegeman, George; Katz, Mordechai; Carrasco, Silvia; Torner Sabata, Lluís (2002-08)
    Article
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    The tuning curves with temperature and incidence angle for second-harmonic generation were asymmetrically distorted and broadened with increasing intensity for narrow input fundamental beams in periodically poled KTiOPO4 ...
  • Two-dimensional solitons with second-order nonlinearities 

    Torner Sabata, Lluís; Menyuk, Curtis; Torruellas, William; Stegeman, George (1995-01)
    Article
    Accés restringit per política de l'editorial
    We investigate the propagation of intense Gaussian beams in materials with quadratic nonlinearity. Excitation of (2 + 1) solitons is numerically predicted at finite phase mismatch and in the presence of linear walk-off ...