- Institut d'Estudis Espacials de CatalunyaES488 papers
- Centre National de la Recherche ScientifiqueFR368 papers
- Universitat de BarcelonaES312 papers
- Barcelona Supercomputing CenterES306 papers
- Institute of Photonic SciencesES273 papers
- Institute of Space SciencesES240 papers
- Consejo Superior de Investigaciones CientíficasES205 papers
- Institució Catalana de Recerca i Estudis AvançatsES200 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR191 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR172 papers
- Universitat Autònoma de BarcelonaES144 papers
- University of BolognaIT141 papers
9 papers · 2 filters
Transition from Dirac points to exceptional points in anisotropic waveguides
Jordi Gomis-Bresco, David Artigas, Lluis Torner
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…
Anisotropy-induced photonic bound states in the continuum
Jordi Gomis-Bresco, David Artigas, Lluis Torner
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 afte…
Robust ultrashort light bullets in strongly twisted waveguide arrays
Carles Milián, Yaroslav V. Kartashov, Lluis Torner
We introduce a new class of stable light bullets that form in twisted waveguide arrays pumped withultrashort pulses, where twisting offers a powerful knob to tune the properties of…
Topological properties of bound-states-in-the-continuum in geometries with broken anisotropy-symmetry
Samyobrata Mukherjee, Jordi Gomis-Bresco, Pilar Pujol-Closa +2
Waveguiding structures made of anisotropic media support bound states in the continuum (BICs) that arise when the radiation channel of otherwise semi-leaky modes is suppressed. Hit…
Photonic crystal spatial filtering in broad aperture diode laser
Sandeep Gawali, Darius Gailevičius, Guillermo Gerre-Werner +5
Broad aperture semiconductor lasers usually suffer from low spatial quality of the emitted beams. Due to the highly compact character of such lasers the use of a conventional intra…
Resonant, broadband and highly efficient optical frequency conversion in semiconductor nanowire gratings at visible and UV wavelengths
M. Scalora, J. Trull, C. Cojocaru +5
Using a hydrodynamic approach we examine bulk- and surface-induced second and third harmonic generation from semiconductor nanowire gratings having a resonant nonlinearity in the a…