Ara es mostren els items 1-10 de 10

    • A 3D printed toolbox for opto-mechanical components 

      Salazar Serrano, Luis Jose; Pérez Torres, Juan; Valencia, Alejandra (2017-01-18)
      Article
      Accés obert
      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 ...
    • Development of an optical spectrophotometer. Characterization of thin layers for photovoltaic devices 

      Padilla Romero, Sebastian Cristopher (Universitat Politècnica de Catalunya, 2020-11-25)
      Treball Final de Grau
      Accés obert
      The purpose of this project is to develop a system with the functionality of a spectrophotometer. The system is based on the automation of a set of instruments available in the laboratory of the MNT research group. The ...
    • Inverse-design of non-Hermitian potentials for light management 

      Botey Cumella, Muriel; Ahmed Waseem, Waqas Waseem; Herrero Simon, Ramon; Wu, Yina; Staliunas, Kestutis (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2022)
      Text en actes de congrés
      Accés obert
      In this paper, we propose a general inverse-design strategy based on genetic algorithm optimization to achieve ‘on demand’ manipulation of light in one-dimensional (1D) and two-dimensional (2D) non-Hermitian systems. The ...
    • Non-Hermitian broad aperture semiconductor lasers based on PT-symmetry 

      Botey Cumella, Muriel; Waseem Ahmed, Waqas; Medina Pardell, Judith; Herrero Simon, Ramon; Staliunas, Kestutis (2019)
      Text en actes de congrés
      Accés obert
      In this paper we propose a novel configuration to regularize the complex spatiotemporal dynamics of broad area lasers into bright light beam. It has recently been shown that arbitrary non-Hermitian optical potentials based ...
    • Optical properties of BaTiO3: determination of the absorption coefficient and its correlation with the material photo-response 

      Pamies Puig, Paula (Universitat Politècnica de Catalunya, 2020-11-26)
      Projecte Final de Màster Oficial
      Accés obert
      The photocontrol of ferroelectric properties has recently attracted notable attention as an effective alternative methodology to electric polarization switching. Specifically, it has been reported that macroscopic polarization, ...
    • Re-investigating phase separation in industrial glasses and their associated optical properties 

      Przepiora, Kevin; Godet, S.; Ragoen, C. (Universitat Politècnica de Catalunya, 2022-06-16)
      Comunicació de congrés
      Accés obert
    • Silicon nanocavities: Optical properties and applications 

      Fenollosa Esteve, Roberto; Shi, Lei; Rodriguez, Isabelle; Garin Escriva, Moises; Meseguer Rico, Francisco Javier (2014)
      Text en actes de congrés
      Accés obert
      Silicon is the key enabling material for advanced technologies in electronics, and photonics. Recently, we have developed silicon nanocavities (SNs) [1,2] with particle size between 300 nm and 3000 nm. Silicon has an ...
    • Spectral reflectance analysis of tobacco leaves and fungus infection detection 

      Gor, Sergio; Sandoval, José; Ramallo, Ana; Vilaseca Ricart, Meritxell; Pujol Ramo, Jaume (2010)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Optical properties of vegetable matter and associated analytical techniques such as VIS and NIR reflectance spectroscopy were used for several decades in the foodstuff industry. By means of these techniques, is possible ...
    • Spectral signatures: A way to identify species and conditions of vegetables 

      Sandoval, José; Gor, Sergio; Ramallo, Jacqueline; Sfer, Ana; Colombo, Elisa; Vilaseca Ricart, Meritxell; Pujol Ramo, Jaume (2010)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This work shows the results obtained by the application of suitable techniques for the acquisition and processing of spectral absorbance data of several vegetable species, allowing its identification –assignment of each ...
    • Third harmonic generation at 223 nm in the metallic regime of GaP 

      Roppo, Vito; Foreman, John V.; Akozbek, N; Vincenti, M. A.; Scalora, M. (2011-03-14)
      Article
      Accés obert
      We demonstrate second and third harmonic generation from a GaP substrate 500 μm thick. The second harmonic field is tuned at the absorption resonance at 335 nm, and the third harmonic signal is tuned at 223 nm, in a range ...