Now showing items 41-60 of 432

  • Cooling and manipulation of a levitated nanoparticle with an optical fiber trap 

    Mestres, Pau; Berthelot, Johann; Spasenović, Marko; Gieseler, Jan; Novotny, Lukas; Quidant, Romain (AIP, 2015-10-15)
    Article
    Open Access
    Accurate delivery of small targets in high vacuum is a pivotal task in many branches of science and technology. Beyond the different strategies developed for atoms, proteins, macroscopic clusters, and pellets, the manipulation ...
  • Correlations and coherence: an experimental proposal 

    Sendra Molins, Lluc (Universitat Politècnica de Catalunya, 2017-10-24)
    Bachelor thesis
    Open Access
    We propose and realize a variation of Mandel's experiment where the Englert's inequality can be demonstrated. This is a relation of the coherence and the which-way information, which is one of the most fundamental results ...
  • Coupling of photonic wire bonds to TriPleX waveguides 

    Cabrejo Ponce, Meritxell (Universitat Politècnica de Catalunya, 2017-05-31)
    Bachelor thesis
    Restricted access - confidentiality agreement
    Covenantee:  Karlsruher Institut für Technologie
  • Coupling plasmons and dyakonons 

    Takayama, Osamu; Artigas García, David; Torner Sabata, Lluís (2012-06-01)
    Article
    Restricted access - publisher's policy
    We study the coupling of plasmons and Dyakonov surface waves propagating at the interfaces between isotropic-birefringent-metal layered structures. Efficient coupling is shown to occur with a proper choice of the crystal ...
  • Current Developments on Optical Feedback Interferometry as an All-Optical Sensor for Biomedical Applications 

    Perchoux, Julien; Quotb, Adam; Atashkhooei, Reza; Azcona Guerrero, Francisco Javier; Ramírez Miquet, Evelio E.; Bernal, Olivier; Jha, Ajit; Luna Arriaga, Antonio; Yáñez Alvarado, Carlos René; Caum Aregay, Jesús; Bosch, Thierry; Royo Royo, Santiago (2016-05-13)
    Article
    Open Access
    Optical feedback interferometry (OFI) sensors are experiencing a consistent increase in their applications to biosensing due to their contactless nature, low cost and compactness, features that fit very well with current ...
  • Una Década de teledetección en el Grupo de Ingeniería Electromagnética y Fotónica 

    Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Mallorquí Franquet, Jordi Joan; Rocadenbosch Burillo, Francisco (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 2003)
    Article
    Open Access
  • Decoupled illumination detection in light sheet microscopy for fast volumetric imaging 

    OLARTE, Omar Eduardo; Andilla, Jordi; Artigas García, David; Loza Álvarez, Pablo (Optical Society of American (OSA), 2015-08-04)
    Article
    Restricted access - publisher's policy
    Current microscopy demands the visualization of large threedimensional samples with increased sensitivity, higher resolution, and faster speed. Several imaging techniques based on widefield, point-scanning, and light-sheet ...
  • Deflection of quadratic solitons at edge dislocations 

    Petrov, D V; Carrasco Rodríguez, Sílvia; Molina Terriza, Gabriel; Torner Sabata, Lluís (2003-08)
    Article
    Restricted access - publisher's policy
    We report the observation of deflection of optical solitons generated in the frequency doubling of light beams containing edgelike topological amplitude and phase dislocations. The angular deflection of the solitons was ...
  • Demonstration of vortex-induced beam shaping in seeded SHG 

    Molina Terriza, Gabriel; Minardi, Stefano; Bramati, Alberto; Di Trapani, Paolo; Torner Sabata, Lluís (2001-07)
    Article
    Restricted access - publisher's policy
    We report the experimental demonstration of a method that allows the simultaneous frequency-doubling and the shaping of a light beam into a variety of patterns. The technique is based on the controllable generation of ...
  • Design and fabrication of a lab-on-chip for cell-based waveguides 

    Ackermann, Tobias Nils (Universitat Politècnica de Catalunya, 2013-09-09)
    Master thesis
    Open Access
    [ANGLÈS] The aim of this project was the development of a polymer-based lab-on-chip integrating cell-based waveguides for CVD risk prevention. Cells will have the dual role of transducer and reporter. In order to obtain ...
  • Design and optimization of Photonic Systems for Microwave Applications 

    Nuño Gomez, Daniel (Universitat Politècnica de Catalunya, 2017-09-07)
    Master thesis
    Open Access
    Covenantee:  Institut de Ciències Fotòniques (ICFO) / Universitat de Barcelona / Universitat Autònoma de Barcelona
    Extensively researched in the last years, the Microwave Photonics Technology field has a number of potential advantages including extremely wide bandwidth, very low frequency constant losses, light weight, immunity to EMI ...
  • Design and Simulation of Vertical Grating Coupler for Photonic Integrated System-in-Package 

    Gili de Villasante, Oriol (Universitat Politècnica de Catalunya, 2010-04)
    Master thesis (pre-Bologna period)
    Open Access
    As we approach the limits in operating speed of IC’s predicted by Moore’s Law, some alternative way of increasing velocities while reducing dimensions has to be found. In this context, optical interconnects appear to be ...
  • Design, implementation and test of a routine Light Sheet fluorescence microscope 

    Escobet Montalbán, Adrià (Universitat Politècnica de Catalunya, 2015-06)
    Bachelor thesis
    Open Access
    Microscopy has revealed an astonishing new world that was previously invisible to our eyes. Unfortunately, we still have very little knowledge of how life actually works, and for that reason new powerful microscopy techniques ...
  • Development of a fluorescence imaging system for a quantum gas experiment 

    Sanz Sánchez, Julio (Universitat Politècnica de Catalunya, 2015-09-10)
    Master thesis
    Open Access
    Covenantee:  Universitat Autònoma de Barcelona / Institut de Ciències Fotòniques (ICFO) / Universitat de Barcelona
    In this report we present a technique for imaging the momentum distribution of an ultracold atomic gas in 3D and with single atom resolution. We describe the first experimental steps taken to implement it in a quantum gas ...
  • Development of a multihit LADAR imaging camera system: Modelling time of flight under diffusion conditions 

    Far Ruiz, Marc (Universitat Politècnica de Catalunya, 2016-06)
    Bachelor thesis
    Open Access
    El Tiempo de vuelo (ToF o Lidar, o Ladar) es una técnica muy común para obtener imágenes en 3D, dando información sobre el tiempo del pulso y su energía. Sin embargo, en medios turbios, tales como el océano o con la presencia ...
  • Development of a scalable, point-of-care and label free microarray platform for rapid detection of sepsis 

    Sendra Garcia, Joan (Universitat Politècnica de Catalunya, 2015-06-29)
    Bachelor thesis
    Restricted access - confidentiality agreement
  • Development of gas sensors based in photonic cristal slabs 

    Yoosefi, Oraman; Yahyapour, MJ; Segura García, Daniel; Vega Bru, Didac; Dios Otín, Víctor Federico; Rodríguez Martínez, Ángel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    This work describes an innovative application of structures of photonic crystal slabs for gas sensors. Structures consisting in double ring have been studied by simulation. Their working mechanism is based in the effect ...
  • Diffraction control in P T -symmetric photonic lattices: from beam rectification to dynamic localization 

    Kartashov, Yaroslav V.; Vysloukh, Victor A.; Konotop, Vladimir V; Torner Sabata, Lluís (2016-01-21)
    Article
    Open Access
    We address the propagation of light beams in longitudinally modulated PT-symmetric lattices, built as arrays of couplers with periodically varying separation between their channels, and show a number of possibilities for ...
  • Diffraction managements of focused light beams in optical lattices with a quadratic frequency modulation 

    Kartashov, Yaroslav V.; Torner Sabata, Lluís; Vysloukh, Victor A. (2005-05)
    Article
    Restricted access - publisher's policy
    We reveal that the effective diffraction experienced by light beams launched along the central guiding channel of optical lattice with a quadratic frequency modulation can be tuned in strength and sign. Complete suppression ...
  • Diffractive effects in 1D and 2D gain/loss periodic spatial modulated materials 

    Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Conference report
    Restricted access - publisher's policy
    The propagation of light through materials with periodically modulated gain can present different effects that are analyzed in the paper. The characterization of these gain/loss metamaterials (GLM) with a two-dimensional ...