Abstract: A metasurface that is designed to control electromagnetic radiation (EMR) in ways that perform more than a single function. The metasurface has a substrate layer that has multiple asymmetric nanofeatures, each having a height (H) between ?min/100 and 2?max. Each nanofeature has a particular length (Dy) that extends along a principal in-plane direction ? and a width (Dx) that is orthogonal thereto. Each nanofeature is tailored to scatter with different patterns one polarization state of electromagnetic radiation and one orthogonal polarization state of electromagnetic radiation.

Abstract: Optical systems include a first optical element featuring a first substrate, a partially-reflective coating disposed on a first surface of the first substrate, a first meta-material layer positioned on or adjacent to a first surface of the first substrate and including a structure that defines a continuous phase gradient along a first direction parallel to the first surface of the first substrate, and a second optical element featuring a second substrate and a second meta-material layer positioned on or adjacent to a first surface of the second substrate and comprising a structure that defines a continuous phase gradient along a second direction parallel to the first surface of the first substrate, where at least one surface of the second optical element is curved along the second direction.

Abstract: Optical elements include a substrate, a partially-reflective coating disposed on a first surface of the substrate, a meta-material layer positioned on or adjacent to a first surface of the substrate and featuring a structure that defines a continuous phase gradient along a first direction parallel to the first surface of the substrate, where a change in magnitude of the phase along the first direction is at least 2? at a wavelength ?, and a partially-reflective layer disposed on or adjacent to the meta-material layer and on an opposite side of the meta-material layer from the substrate.

Abstract: A thermal metasurface that provides a planar optical source based on thermal radiation or photoluminescence. The thermal metasurface provides dual perturbative control of both radiative and non-radiative lifetimes of a q-BIC via geometric and material perturbation of monomeric and dimeric pillars.

Abstract: A metasurface that is designed to control electromagnetic radiation (EMR) in ways that perform more than a single function. The metasurface has a substrate layer that has multiple asymmetric nanofeatures, each having a height (H) between ?min/100 and 2?max. Each nanofeature has a particular length (Dy) that extends along a principal in-plane direction ? and a width (Dx) that is orthogonal thereto. Each nanofeature is tailored to scatter with different patterns one polarization state of electromagnetic radiation and one orthogonal polarization state of electromagnetic radiation.