Now showing items 1-20 of 120

  • A 3D printed toolbox for opto-mechanical components 

    Salazar Serrano, Luis Jose; Pérez Torres, Juan; Valencia, Alejandra (2017-01-18)
    Article
    Open Access
    In this article we present the development of a set of opto-mechanical components (a kinematic mount, a translation stage and an integrating sphere) that can be easily built using a 3D printer based on Fused Filament ...
  • A measure of flow vorticity with twisted beams of light 

    Belmonte Molina, Aniceto; Rosales Guzmán, Carmelo; Pérez Torres, Juan (Curran, 2016)
    Conference report
    Restricted access - publisher's policy
    The measurement of vorticity, a parameter providing local measurements of rotation at every point in a flow, would greatly assist research fields as diverse as biology microfluidics, complex motions in the oceanic and ...
  • Arresting wave collapse by wave self-rectification 

    Crasovan, L C; Pérez Torres, Juan; Mihalache, Dumitru; Torner Sabata, Lluís (2003-08)
    Article
    Restricted access - publisher's policy
    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 ...
  • Asymmetrical splitting of higher-order optical solitons induced by quintic nonlinearity 

    Artigas García, David; Torner Sabata, Lluís; Pérez Torres, Juan; Akhmediev, Juan P Torres I Nail N (1997-11)
    Article
    Restricted access - publisher's policy
    We address the effect of quintic nonlinearities in the propagation of optical solitons in cubic nonlinear media. Our focus is on the decay of higher-order solitons in the presence of self-defocusing quintic perturbations. ...
  • Break-up of spatial solitons by cascading 

    Pérez Torres, Juan; Torner Sabata, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 1996)
    Conference report
    Open Access
  • Broadband light generation by noncollinear parametric down-conversion 

    Carrasco, S; Nars, M B; Sergienko, A; Saleh, B E A; Teich, M C; Pérez Torres, Juan; Torner Sabata, Lluís (2006-01)
    Article
    Restricted access - publisher's policy
    Broadband light generation is demonstrated by noncollinear spontaneous parametric downconversion with a cw pump laser. By use of a suitable noncollinear phase-matching geometry and a tightly focused pump beam, downconverted ...
  • Coherent delocalization: views of entanglement in different scenarios 

    León-Montiel, Roberto de J.; Vallès, Adam; Moya-Cessa, H. M.; Pérez Torres, Juan (IOP, 2015-07-21)
    Article
    Open Access
    The concept of entanglement was originally introduced to explain correlations existing between two spatially separated systems, that cannot be described using classical ideas. Interestingly, in recent years, it has been ...
  • Complex light-assisted optical metrology techniques 

    Rosales Guzmán, Carmelo; Belmonte Molina, Aniceto; Pérez Torres, Juan (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2018)
    Conference report
    Restricted access - publisher's policy
    The on-demand tailoring of the properties of light, such as phase, polarization or spatial shape, has completely changed the landscape of photonic-based applications. In this way, complex light fields have become an ...
  • Conmutacion totalmente optica de ondas guiadas en medios virefring. 

    Santos Blanco, M. Concepción; Pérez Torres, Juan; Torner Sabata, Lluís (1993)
    Conference report
    Open Access
    A new kind of tunable all-optical guided-wave thresholding device using waveguides consisting of both birefringent linear media and isotropic nonlinear media is discussed. The behavior of the lower threshold with a suitable ...
  • Controllable patterns of parametric solitons 

    Minardi, S; Molina Terriza, Gabriel; Bramati, A; Ditrapani, P; Torner Sabata, Lluís; Pérez Torres, Juan; Petrov, D V; Soto-Crespo, J M (2001-12)
    Article
    Restricted access - publisher's policy
  • Demonstration of a highly-sensitive tunable beam displacer with no use of beam deflection based on the concept of weak value amplification 

    Salazar-Serrano, Luis José; Guzmán, David A.; Valencia, Alejandra; Pérez Torres, Juan (OSA, 2015-04-20)
    Article
    Open Access
    We report the implementation of a highly sensitive tunable beam displacer based on the concept of weak value amplification, that allows to displace the centroid of a Gaussian beam a distance much smaller than its beam width ...
  • Demonstration of a highly-sensitive tunable beam displacer with no use of beam deflection based on the concept of weak value amplification 

    Salazar Serrano, Luis Jose; Guzman, David A; Valencia, Alejandra; Pérez Torres, Juan (2015-04-10)
    Article
    Restricted access - publisher's policy
    We report the implementation of a highly sensitive tunable beam displacer based on the concept of weak value amplification, that allows to displace the centroid of a Gaussian beam a distance much smaller than its beam width ...
  • Diagrammatic analysis of nonlinear planar waveguides 

    Pérez Torres, Juan; Torner Sabata, Lluís (1994-01)
    Article
    Restricted access - publisher's policy
    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 ...
  • Digital coherent receiver for orbital angular momentum demultiplexing 

    Belmonte Molina, Aniceto; Pérez Torres, Juan (2013-01-15)
    Article
    Open Access
    We put forward a type of receiver for coherent detection of the photon orbital angular momentum (OAM). A coherent array receiver, consisting of multiple subapertures, with each subaperture coupled to a single-mode fiber, ...
  • Digital spiral imaging 

    Torner Sabata, Lluís; Pérez Torres, Juan; Carrasco, Silvia (2005-02)
    Article
    Restricted access - publisher's policy
    A major application of optics is imaging all types of structural, physical, chemical and biological features of matter. Techniques based on most known properties of light have been developed over the years to remotely ...
  • Direction-sensitive transverse velocity measurement by phase-modulated structured light beams 

    Rosales Guzmán, Carmelo; Hermosa, Nathaniel; Belmonte Molina, Aniceto; Pérez Torres, Juan (2014-09-15)
    Article
    Restricted access - publisher's policy
    The use of structured light beams to detect the velocity of targets moving perpendicularly to the beam's propagation axis opens new avenues for remote sensing of moving objects. However, determining the direction of motion ...
  • Echo Doppler with structured light 

    Belmonte Molina, Aniceto; Pérez Torres, Juan (The Optical Society (OSA), 2012)
    Conference report
    Restricted access - publisher's policy
    When a light beam with a transverse spatially - varying phase is considered for optical remote sensing, in addition to the usual longitudinal Doppler freq uency shift of the returned signal induced by the motion of ...
  • Efficiency-enhanced soliton optical parametric amplifier 

    Carrasco Rodríguez, Sílvia; Pérez Torres, Juan; Torner Sabata, Lluís; Fejer, M M (2002-06)
    Article
    Restricted access - publisher's policy
    We show that the pump–to–signal power conversion efficiency of parametric chirped-pulse amplifiers made with periodically poled materials operating with multicolor spatial solitons can be significantly enhanced by employing ...
  • Efficient heralding of polarization-entangled photons from type-0 and type-II spontaneous parametric downconversion in periodically poled KTiOPO 4 

    Steinlechner, Fabian; Gilaberte, Marta; Jofre, Marc; Scheidl, Thomas; Pérez Torres, Juan; Pruneri, Valerio; Ursin, Rupert (2014-09-01)
    Article
    Restricted access - publisher's policy
    Ultrabright sources of entangled photon pairs with high heralding efficiency are an important step in the pursuit of high-bit-rate entanglement-base quantum key distribution, as well as an enabling tool for loss-sensitive ...
  • Eigenvalue control and switching by fission of multisoliton bound states in planar waveguides 

    Aleshkevich, V A; Kartashov, Yaroslav V.; Zelenina, A S; Vysloukh, Victor A.; Pérez Torres, Juan; Torner Sabata, Lluís (2004-03)
    Article
    Restricted access - publisher's policy
    We report the results of numerical studies of the fission of ¿-soliton bound states at the interface formed by a Kerr nonlinear medium and a linear dielectric in a planar waveguide. A variety of effects are shown to occur, ...