La recerca d'avantguarda en les aplicacions de les ciències i tecnologies de la llum a diversos camps, amb èmfasi en la biofotònica, l'òptica quàntica i els fenòmens i dispositius de control de llum amb llum.

http://futur.upc.edu/FOTONICA

Enviaments recents

  • 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 ...
  • 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 ...
  • Hybrid waves guided by ultrathin films 

    Torner Sabata, Lluís; Pérez Torres, Juan; Ojeda, C.; Mihalache, Dumitru (1995-09)
    Article
    Accés obert
    Abstract: The existence conditions and waveguiding properties of new hybrid, TE-dominant waveguide modes of properly tailored waveguides consisting on ultrathin films cladded by a positive birefringent crystal are analyzed. ...
  • 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 ...
  • 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 ...
  • Interaction of one-dimensional bright solitary waves in quadratic media 

    Baboiu, D; Stegeman, G; Torner Sabata, Lluís (1995-11-15)
    Article
    Accés restringit per política de l'editorial
    © 1995 Optical Society of America. The interaction of spatial solitary waves with one transverse dimension in materials with a ¿(2):¿(2) nonlinearity is investigated. The relation between the phases of the two interacting ...
  • Stationary trapping of light beams in bulk second-order nonlinear media 

    Torner Sabata, Lluís; Mihalache, Dumitru; Mazilu, D; Wright, E M; Torruellas, W E; Stegeman, G I (1995-12)
    Article
    Accés restringit per política de l'editorial
    The mutual trapping of fundamental and second harmonic, continuous-wave light beams propagating in bulk second-order nonlinear media is studied. We find numerically families of stationary, radially symmetric solitary waves. ...
  • Diagrammatic analysis of nonlinear planar waveguides 

    Pérez Torres, Juan; Torner Sabata, Lluís (1994-01)
    Article
    Accés restringit per política de l'editorial
    We show that universal V–b diagrams provide a powerful tool for analyzing the properties of nonlinear TE-polarized waves guided by optical planar structures. Here we focus on a waveguide consisting of an optically linear ...
  • Nonlinear hybrid guided waves in birefringent media 

    Pérez Torres, Juan; Torner Sabata, Lluís; Lederer, F.; Mihalache, Dumitru; Baboiu, Daniel; Ciumac, Mariana (1994-06)
    Article
    Accés restringit per política de l'editorial
    The waveguiding properties of nonlinear hybrid waves guided by integrated-optics structures containing both birefringent crystals and isotropic nonlinear media have been investigated. The existence of both TE- and TM-dominant ...
  • Bloch oscillations in optical and Zeeman lattices in the presence of spin-orbit coupling 

    Kartashov, Yaroslav V.; Konotop, Vladimir V; Zezyulin, Dmitry A; Torner Sabata, Lluís (2016-11-18)
    Article
    Accés obert
    We address Bloch oscillations of a spin-orbit coupled atom in periodic potentials of two types: optical and Zeeman lattices. We show that in optical lattices the spin-orbit coupling allows controlling the direction of ...

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