Control over the dispersion of the refractive index is essential to the performance of most
modern optical systems. These range from laboratory microscopes to optical fibres and even …

BACKGROUND Future high-performance portable and wearable optical devices and
systems with small footprints and low weights will require components with small form …

Among various flat optical devices, metasurfaces have presented their great ability in
efficient manipulation of light fields and have been proposed for variety of devices with …

A lightweight and portable spectrometer is desirable for miniaturization and integration. The
unprecedented capability of optical metasurfaces has shown much promise to perform such …

A light-field camera captures both the intensity and the direction of incoming light,,,–. This
enables a user to refocus pictures and afterwards reconstruct information on the depth of …

In this Letter, we demonstrate highly efficient, polarization-insensitive planar lenses
(metalenses) at red, green, and blue wavelengths (λ= 660, 532, and 405 nm). Metalenses …

Recently, metasurfaces composed of artificially fabricated subwavelength structures have
shown remarkable potential for the manipulation of light with unprecedented functionality …

In this Letter, we experimentally report an achromatic metalens (AML) operating over a
continuous bandwidth in the visible. This is accomplished via dispersion engineering of …

Metasurfaces are ultrathin metamaterials consisting of planar electromagnetic (EM)
microstructures (eg, meta-atoms) with pre-determined EM responses arranged in specific …

Hyperspectral imaging is vital for material identification but traditional systems are bulky,
hindering the development of compact systems. While previous metasurfaces address …