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

  • Engineering of multicolor spatial solitons with chirped-period quasi-phase-matching gratings in optical parametric amplification 

    Schober, A M; Fejer, M M; Carrasco, S; Torner Sabata, Lluís (2005-08)
    Article
    Accés restringit per política de l'editorial
    We demonstrate the excitation of solitons in a parametric amplifier with enhanced signal content through the use of a chirped-period quasi-phase-matching grating. This technique affords a low soliton threshold at the input ...
  • Stable spatiotemporal solitons in Bessel optical lattices 

    Mihalache, Dumitru; Mazilu, D; Lederer, F; Malomed, B A; Kartashov, Yaroslav V.; Crasovan, L C; Torner Sabata, Lluís (2005-08)
    Article
    Accés restringit per política de l'editorial
    We investigate the existence and stability of three-dimensional solitons supported by cylindrical Bessel lattices in self-focusing media. If the lattice strength exceeds a threshold value, we show numerically, and using ...
  • Stable three-dimensional solitons in attarctive Bose-Einstein condensates loaded in an optical lattice 

    Mihalache, Dumitru; Mazilu, D; Lederer, F; Malomed, B A; Crasovan, L C; Kartashov, Yaroslav V.; Torner Sabata, Lluís (2005-08)
    Article
    Accés restringit per política de l'editorial
    The existence and stability of solitons in Bose-Einstein condensates with attractive interatomic interactions, described by the Gross-Pitaevskii equation with a three-dimensional (3D) periodic potential, are investigated ...
  • The spatial shape of entangled photon states in non-collinear, walking parametric downconversion 

    Pérez Torres, Juan; Molina Terriza, Gabriel; Torner Sabata, Lluís (2005-08)
    Article
    Accés restringit per política de l'editorial
    We address the spatial shape of entangled photon states generated in spontaneous parametric downconversion in non-collinear geometries, when the interacting waves exhibit Poynting vector walk-off. We discuss how such shape ...
  • Soliton topology versus discrete symmetry in optical lattices 

    Kartashov, Yaroslav V.; Ferrando, A; Egorov, A A; Torner Sabata, Lluís (2005-09)
    Article
    Accés restringit per política de l'editorial
    We address the existence of vortex solitons supported by azimuthally modulated lattices and reveal how the global lattice discrete symmetry has fundamental implications on the possible topological charges of solitons. We ...
  • Soliton mobility in nonlocal optical lattices 

    Xu, Zhiyong; Kartashiv, Y V; Torner Sabata, Lluís (2005-09)
    Article
    Accés restringit per política de l'editorial
    We address the impact of nonlocality in the physical features exhibited by solitons supported by Kerr-type nonlinear media with an imprinted optical lattice. We discover that the nonlocality of the nonlinear response can ...
  • Optical Dyakonov surface waves at magnetic interfaces 

    Crasovan, L C; Artigas García, David; Mihalache, Dumitru; Torner Sabata, Lluís (2005-11)
    Article
    Accés restringit per política de l'editorial
    We address the existence and properties of lossless surface waves that form at interfaces between magnetic and birefringent media. We show that the angular domain of existence of Dyakonov surface waves for magnetic interfaces ...
  • Multipole-mode solitons in Bessel optical lattices 

    Kartashov, Yaroslav V.; Carretero Gonzalez, R; Malomed, B A; Vysloukh, Victor A.; Torner Sabata, Lluís (2005-12)
    Article
    Accés restringit per política de l'editorial
    We study basic properties of quiescent and rotating multipole-mode solitons supported by axially symmetric Bessel lattices in a medium with defocusing cubic nonlinearity. The solitons can be found in different rings of the ...
  • Topological dragging of solitons 

    Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2005-12)
    Article
    Accés restringit per política de l'editorial
    We put forward properties of solitons supported by optical lattices featuring topological dislocations and show that solitons experience attractive and repulsive forces around the dislocations. Suitable arrangements of ...
  • Upper threshold for stability of multipole-mode solitons in nonlocal nonlinear media 

    Xu, Zhiyong; Kartashov, Yaroslav V.; Torner Sabata, Lluís (2005-12)
    Article
    Accés restringit per política de l'editorial
    We address the stability of multipole-mode solitons in nonlocal Kerr-type nonlinear media. Such solitons comprise several out-of-phase peaks packed together by the forces acting between them. We discover that dipole-, ...

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