Exploració per autor "Artigas García, David"
Ara es mostren els items 31-50 de 65
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Fast monitoring of in-vivo conformational changes in myosin using single scan polarization- SHG microscopy
Psilodimitrakopoulos, Sotiris; Loza Álvarez, Pablo; Artigas García, David (2014-12-01)
Article
Accés restringit per política de l'editorialFast imaging of molecular changes under high-resolution and label-free conditions are essential for understanding in-vivo processes, however, current techniques are not able to monitor such changes in real time. Polarization ... -
Generation of multicolor spatial solitons with pulsed light
Carrasco Rodríguez, Sílvia; Pérez Torres, Juan; Artigas García, David; Torner Sabata, Lluís (2001-05)
Article
Accés restringit per política de l'editorialThe impact of temporal effects to the generation of multiple wave quadratic spatial solitons with pulsed light is shown. We examine soliton formation under conditions of second-harmonic generation but our conclusions are ... -
Imaging amylopectin's order in starch using 3-dimensional polarization SHG
Psilodimitrakopoulos, Sotiris; Amat Roldán, Iván; Artigas García, David; Loza Álvarez, Pablo (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2011)
Text en actes de congrés
Accés restringit per política de l'editorialIn minimally destructive SHG biomedical imaging (high resolution optical slicing) is greatly desirable to extract the maximum of information from the light matter interaction. Here we develop a 3-D biophysical model and ... -
La fotònica revoluciona les telecomunicacions
Torner Sabata, Lluís; Pérez Torres, Juan; Artigas García, David; Santos Blanco, M. Concepción (1998-12)
Article
Accés obert -
Las Telecomunicaciones fotónicas hacen posible super-internet
Torres, Juan P.; Torner Sabata, Lluís; Artigas García, David; Santos, María C. (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1998)
Article
Accés obert -
Lossless directional guiding of light in dielectric nanosheets using Dyakonov surface waves
Takayama, Osamu; Artigas García, David; Torner Sabata, Lluís (2014-06-01)
Article
Accés restringit per política de l'editorialGuiding light at the nanoscale is usually accomplished using surface plasmons(1-12). However, plasmons propagating at the surface of a metal sustain propagation losses. A different type of surface excitation is the Dyakonov ... -
Lost writing uncovered by laser two-photon fluorescence provides a terminus post quem for Roman colonization of Hispania Citerior
Cormack, I G; Loza-Álvarez, P; Sarrado, L; Tomás, S; Amat Roldán, Iván; Torner Sabata, Lluís; Artigas García, David; Guitart, Josep; Pera, J; Ros, J (Journal of Archeaological Science, 2007-10)
Article
Accés restringit per política de l'editorialIn this work, two-photon absorption fluorescence is used as a non-destructive method to detect the presence of paint upon an archaeological sample. The objective was to recover writing that, due to the discoloration caused ... -
Measurement and correction of in vivo sample aberrations employing a nonlinear guide-star in two-photon excited fluorescence microscopy
Aviles Espinosa, Rodrigo; Andilla, Jordi; Porcar-Guezenec, Rafael; Olarte, Omar E.; Nieto, Marta; Levecq, Xavier; Artigas García, David; Loza Álvarez, Pablo (2011-11-01)
Article
Accés obertWe demonstrate that sample induced aberrations can be measured in a nonlinear microscope. This uses the fact that two-photon excited fluorescence naturally produces a localized point source inside the sample: the nonlinear ... -
Nano guiding of light using Dyakonov waves
Takayama, Osamu; Torner Sabata, Lluís; Artigas García, David (2014-12)
Article
Accés restringit per política de l'editorialThis special issue of Optics & Photonics News highlights the most exciting peer-reviewed optics research to have emerged over the past 12 months. -
Nano Guiding of Light Using Dyakonov Waves
Takayama, Osamu; Artigas García, David; Torner Sabata, Lluís (OSA, 2014-12-01)
Article
Accés obert -
Nonlinear resonant conversion of modes in optical waveguides
Dios Otín, Víctor Federico; Shvartsburg, Alexander B.; Artigas García, David; Canal Bienzobas, Fernando (ELSEVIER SCIENCE BV, 1995-07-31)
Article
Accés obertA new class of resonant exchange of power among three co-propagating modes in dielectric optical waveguides exhibiting Kerr-like nonlinearity is reported. Unlike the coupling of modes travelling in different, spatially ... -
Observation of Dyakonov surface waves
Takayama, Osamu; Crasovan, I; Artigas García, David; Torner Sabata, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2009)
Text en actes de congrés
Accés restringit per política de l'editorialSummary form only given. A special type of surface wave was predicted by M. I. Dyakonov in 1988. Such waves exist under special conditions at the interface of transparent anisotropic materials, and hens they are lossless. ... -
Observation of Dyakonov surface waves
Takayama, Osamu; Crasovan, L; Artigas García, David; Torner Sabata, Lluís (2009-01)
Article
Accés restringit per política de l'editorialWe report the first experimental observation of Dyakonov surface waves existing at the interface of transparent anisotropic crystals. A Otto-Kretchmann configuration was used to excite the surface waves at the interface ... -
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'editorialWe 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 ... -
ORGANITZACIÓ DE LA PRODUCCIÓ (Examen 1r quadrimestre, 2n parcial)
Artigas García, David; Espot Piñol, Carmen; Borrell Matas, Marc (Universitat Politècnica de Catalunya, 2013-01-14)
Examen
Accés restringit a la comunitat UPC -
Phase space description of nonlinear directional couplers
Artigas García, David; Dios Otín, Víctor Federico (1994-07)
Article
Accés obertA comprehensive analysis of the symmetric nonlinear directional coupler as a function of the excitation conditions is reported. The analysis is based on a coupled-mode technique in normalized (dimensionless) parameters, ... -
Phase space description of nonlinear directional couplers
Artigas García, David; Dios Otín, Víctor Federico (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1994-07-01)
Article
Accés obertA comprehensive analysis of the symmetric nonlinear directional coupler as a function of the excitation conditions is reported. The analysis is based on a coupled-mode technique in normalized (dimensionless) parameters, ... -
Practical dyakonons
Takayama, Osamu; Artigas García, David; Torner Sabata, Lluís (2012-10-12)
Article
Accés restringit per política de l'editorialWe show that engineered photonic metamaterials composed of alternating layers of suitable dielectrics and metals can support different kinds of surface waves (SWs) under robust and readily achievable experimental conditions. ... -
Pulse compression and gain enhancement in a DOPA based on aperiodically poled crystals
Artigas García, David; Reid, D T; Fejer, M M; Torner Sabata, Lluís (2002-03)
Article
Accés restringit per política de l'editorialWe describe theoretically a method of obtaining pulse compression and simultaneously improving amplification in a degenerate optical parametric amplifier by use of quasi-phase-matched engineered crystals. The scheme combines ... -
Quadratic solitons: existence versus excitation
Carrasco Rodríguez, Sílvia; Torner Sabata, Lluís; Pérez Torres, Juan; Artigas García, David; López-Lago, E; Couderc, V; Barthelemy, A (2002-06)
Article
Accés restringit per política de l'editorialWhole families of stable optical solitons are known to exist in media with quadratic nonlinearity, and evidence of such existence has been demonstrated experimentally during the last years in several materials. However, ...