Terahertz (THz) science and technology have attracted significant attention based on their
unique applications in non-destructive imaging, communications, spectroscopic detection …

Metasurfaces, which are the two-dimensional counterparts of metamaterials, have
demonstrated unprecedented capabilities to manipulate the wavefront of electromagnetic …

Beam splitters are widely used in various optical systems, but traditional beam splitters are
bulky and heavy, which are not conducive to the integrated utilization of optical devices …

Cylindrical vector beams (CVBs), being a special kind of beams with spatially variant states
of polarizations, are promising in photonics applications, including high-resolution imaging …

The investigation of converged twisted beams with a helical phase structure has a
remarkable impact on both fundamental physics and practical applications. Geometric …

In this paper, we design a type of switchable metasurfaces by employing vanadium dioxide
(VO2), which possess tunable and diversified functionalities in the terahertz (THz) …

The control of spin electromagnetic (EM) waves is of great significance in optical
communications. Although geometric metasurfaces have shown unprecedented capability to …

Lenses with an extended focal depth have crucial applications in high‐precision optical
alignment systems and optical disk readout systems. However, further development of …

Terahertz (THz) sensing of molecular fingerprint enables wide applications in biomedicine
and security detection. Conventional detection approaches face big barriers in trace …

In this paper, we demonstrate a terahertz (THz) binary encoder based on graphene
metasurface. The unit cell of the device consists of two parallel metal bars and two split-ring …