Surface plasmons (SPs) are electromagnetic surface waves that propagate at the interface
between a conductor and a dielectric. Due to their unique ability to concentrate light on two …

Manipulating circularly polarized (CP) electromagnetic (EM) waves at will is significantly
important for a wide range of applications ranging from chiral-molecule manipulations to …

The achievable functionalities of metasurfaces are mainly determined by the capability of
their unit cells to control the local electromagnetic responses. To realize full control over …

Multifunctional terahertz (THz) devices in transmission mode are highly desired in
integration‐optics applications, but conventional devices are bulky in size and inefficient …

The manipulation of polarization states is reflected in the tailoring of light–matter interactions
and has great applications in fundamental science. Nevertheless, the conventional …

The availability of static tiny optical devices is mandatory to reduce the complexity of optical
paths that typically use dynamic optical components and/or many standard elements for the …

Metasurfaces with programmable functions possess great potential in developing
propagation control devices for electromagnetic waves. However, in the terahertz (THz) …

Miniaturized nonvolatile reconfigurable optical components with a subwavelength thickness,
extremely compact size, high-speed response, and low power consumption will be the core …

Vortex beams, carrying orbital angular momentum (OAM), have plenty of applications
ranging from particle manipulation to high‐capacity data transmissions. In particular, the …

Light is a complex vectorial field characterized by its amplitude, phase, and polarization
properties, which can be further represented by four basic parameters, that is, amplitudes …