66 citations · 131 across the 7 of their papers we have counts for
14 papers
Quality factor of dielectric optical resonators
Xavier Zambrana-Puyalto, Søren Raza
We show analytically that the quality () factor of magnetic and electric Mie modes in a lossless dielectric spherical resonator with high refractive index () scales as…
Non-imaging metasurface design for collimated beam shaping
Kirstine Engell Sandager Nielsen, Mads Allerup Carlsen, Xavier Zambrana-Puyalto +1
Non-imaging optical lenses can shape the light intensity from incoherent sources to a desired target intensity profile, which is important for applications in lighting, solar light…
On the helicity conservation for Mie optical cavities
Jorge Olmos-Trigo, Xavier Zambrana-Puyalto
The study of helicity in the context of light-matter interactions is an increasing area of research. However, some fundamental aspects of the helicity content of light fields insid…
Multiple Kerker anapoles in dielectric microspheres
Cristina Sanz-Fernández, Martín Molezuelas, Jon Lasa-Alonso +3
High refractive index dielectric spheres present remarkable light-scattering properties in the spectral range dominated by dipolar modes. However, most of these properties are abse…
Directional coupling of emitters into waveguides: A symmetry perspective
Aristeidis G. Lamprianidis, Xavier Zambrana-Puyalto, Carsten Rockstuhl +1
Recent experiments demonstrated strongly directional coupling of light into waveguide modes. We identify here the mechanisms behind this effect. We consider emitters near a wavegui…
Chemically-controlled self-assembly of hybrid plasmonic nanopores on graphene
Giorgia Giovannini, Matteo Ardini, Nicolo Maccaferri +6
Thanks to the spontaneous interaction between noble metals and biological scaffolds, nanomaterials with unique features can be achieved following relatively straightforward and cos…