Now showing items 1-11 of 11

    • Angular control of anisotropy-induced bound states in the continuum 

      Mukherjee, Samyobrata; Gomis Bresco, Jordi; Pujol Closa, Maria del Pilar; Artigas García, David; Torner Sabata, Lluís (2019-11-01)
      Article
      Open Access
      Radiation of leaky modes existing in anisotropic waveguides can be cancelled by destructive interference at special propagation directions relative to the optical axis orientation, resulting in fully bound states surrounded ...
    • Anisotropy-induced photonic bound states in the continuum 

      Gomis Bresco, Jordi; Artigas García, David; Torner Sabata, Lluís (Nature, 2017-03-20)
      Article
      Open Access
      Bound states in the continuum (BICs) are radiationless localized states embedded in the part of the parameter space that otherwise corresponds to radiative modes. Many decades after their original prediction1, 2, 3 and ...
    • Bound states in the continuum in anisotropic structures 

      Gomis Bresco, Jordi; Artigas García, David; Pujol Closa, Maria del Pilar; Torner Sabata, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      We report theoretical and experimental observation of radiationless bound states in the continuum (BIC) in waveguiding anisotropic structures. BICs may have all possible polarizations and be the only possible boundstates ...
    • Existence loci of bound states in the continuum in the parameter space of anisotropic planar structures 

      Mukherjee, Samyobrata; Gomis Bresco, Jordi; Pujol Closa, Maria del Pilar; Artigas García, David; Torner Sabata, Lluís (Optical Society of American (OSA), 2019)
      Conference lecture
      Open Access
      Bound states in the continuum (BICs), first predicted in the field of quantum physics [1], are localized radiationless states existing in the part of the spectrum that corresponds to radiative modes. BICs are a general ...
    • Final 2019 

      Álvarez Lacalle, Enrique; Bertran Cànovas, Òscar; Gomis Bresco, Jordi (Universitat Politècnica de Catalunya, 2019-01-07)
      Exam
      Restricted access to the UPC academic community
    • Parcial 2018 

      Álvarez Lacalle, Enrique; Bertran Cànovas, Òscar; Gomis Bresco, Jordi (Universitat Politècnica de Catalunya, 2018-11-05)
      Exam
      Restricted access to the UPC academic community
    • Self-sustained coherent phonon generation in optomechanical cavities 

      Navarro Urios, D.; Gomis Bresco, Jordi; Alzina, F. (Institute of Physics (IOP), 2016-09)
      Article
      Open Access
      Optical forces can set tiny objects in states of mechanical self-sustained oscillation, spontaneously generating periodic signals by extracting power from steady sources. Miniaturized self-sustained coherent phonon sources ...
    • Topological properties of bound states in the continuum in geometries with broken anisotropy symmetry 

      Mukherjee, Samyobrata; Gomis Bresco, Jordi; Pujol Closa, Maria del Pilar; Artigas García, David; Torner Sabata, Lluís (2018-12-18)
      Article
      Open Access
      Waveguiding structures made of anisotropic media support bound states in the continuum (BICs) that arise when the radiation channel of otherwise semileaky modes is suppressed. Hitherto, only structures with optical axes ...
    • Topology Transitions of Anisotropy Induced Bound States in the Continuum 

      Mukherjee, Samyobrata; Gomis Bresco, Jordi; Pujol Closa, Maria del Pilar; Artigas García, David; Torner Sabata, Lluís (2018)
      Conference report
      Open Access
      We demonstrate that Bound states In the Continuum (BICs) are supported in planar anisotropic structures where the optic axes are arbitrarily oriented. Moreover, we reveal fundamental new topological properties of these ...
    • Transition from Dirac points to exceptional points in anisotropic waveguides 

      Gomis Bresco, Jordi; Artigas García, David; Torner Sabata, Lluís (American Physical Society, 2019-10-04)
      Article
      Open Access
      We uncover the existence of Dirac and exceptional points in waveguides made of anisotropic materials, and study the transition between them. Dirac points in the dispersion diagram appear at propagation directions where the ...
    • Waveguide stopped light mediated by mode transitions 

      Pujol Closa, Maria del Pilar; Gomis Bresco, Jordi; Gomez Diaz, J. Sebastian; Artigas García, David (Optical Society of American (OSA), 2019)
      Conference lecture
      Open Access
      Hyperbolic metamaterials (HMMs) are uniaxial materials that have hyperbolic dispersion curves. There are two types of hyperbolic metamaterials, type I that is described by a permittivity tensor with e|| < 0 and e¿ > 0, and ...