Metasurfaces and planar photonic crystals are two classes of subwavelength diffractive
optical devices offering novel functionalities. The former employ independently operating …

Quasi-bound states in the continuum (QBICs) are Fano resonant states with long optical
lifetimes controlled by symmetry-breaking perturbations. While conventional Fano …

Harnessing the full complexity of optical fields requires the complete control of all degrees of
freedom within a region of space and time—an open goal for present-day spatial light …

Photonic crystal slabs (PCSs) are a well-studied class of devices known to support optical
Fano resonances for light normally incident to the slab, useful for narrow-band filters …

Photonic technologies offer numerous functionalities that can be used to realize
astrophotonic instruments. The most spectacular example to date is the ESO Gravity …

Actively tunable and reconfigurable wavefront sha** by optical metasurfaces poses a
significant technical challenge often requiring unconventional materials engineering and …

Multiplexing is a strategy to augment the transmission capacity of a communication system. It
consists of combining multiple signals over the same data channel and it has been very …

Fano resonances are conventionally understood as sharp spectral features with selectivity in
the momentum-frequency domain, implying that they can be excited only by plane waves …

Spatial light modulators (SLMs) play essential roles in various free-space optical
technologies, offering spatio-temporal control of amplitude, phase, or polarization of light …

Phase-only modulators are of great importance for dynamic control over the wavefront of
light in a wide range of applications where high efficiency and uniform amplitude are …