An overview of the recent developments in the field of cylindrical vector beams is provided.
As one class of spatially variant polarization, cylindrical vector beams are the axially …

Electronic circuits provide us with the ability to control the transport and storage of electrons.
However, the performance of electronic circuits is now becoming rather limited when digital …

Metalenses consist of an array of optical nanoantennas on a surface capable of
manipulating the properties of an incoming light wavefront. Various flat optical components …

Metasurfaces are artificially structured thin films with unusual properties on demand.
Different from metamaterials, the metasurfaces change the electromagnetic waves mainly by …

Sorting orbital angular momentum (OAM) and spin angular momentum (SAM) of photons is
crucial for optical communications, optical storage, and quantum information processing …

Recent theory has predicted a superlens that is capable of producing sub–diffraction-limited
images. This superlens would allow the recovery of evanescent waves in an image via the …

Surface plasmons (SPs) are coherent oscillations of conduction electrons on a metal surface
excited by electromagnetic radiation at a metal-dielectric interface. The growing field of …

Collective electronic excitations at metal surfaces are well known to play a key role in a wide
spectrum of science, ranging from physics and materials science to biology. Here we focus …

In the past centuries, the scale of engineering optics has evolved toward two opposite
directions: one is represented by giant telescopes with apertures larger than tens of meters …

Manipulation of the propagation and energy‐transport characteristics of subwavelength
infrared (IR) light fields is critical for the application of nanophotonic devices in …