Metasurfaces have become a rapidly growing field of research in recent years due to their
exceptional abilities in light manipulation and versatility in ultrathin optical applications. They …

The replacement of bulk refractive optical elements with diffractive planar components
enables the miniaturization of optical systems. However, diffractive optics suffers from large …

We design, fabricate, and experimentally demonstrate an ultrathin, broadband half-wave
plate in the near-infrared range using a plasmonic metasurface. The simulated results show …

Metamaterials offer exciting opportunities that enable precise control of light propagation, its
intensity and phase by designing an artificial medium of choice. Inducing birefringence via …

A study of optical aberrations for flat lenses based on phase discontinuities is reported. The
wave aberration function and the analytical expression of the aberrations up to the 4th order …

Metasurfaces, the phase‐engineered quasi‐2D interfaces, have attracted intensive interest
due to their great capabilities in manipulating the reflection, refraction and transmission of …

Metasurfaces are planarized and miniaturized versions of conventional optical elements.
Subwavelength‐thick single‐layer metalenses have diffraction limited resolution for on‐axis …

We present efficient designs of graphene-based thin absorbers, which are capable of near-
unity absorption of the incident electromagnetic waves in the terahertz regime. Primarily, a …

Asymmetric transmission, defined as the difference between the forward and backward
transmission, enables a plethora of applications for on-chip integration and …

Terahertz beam splitters and polarization rotators are two typical devices with wide
applications ranging from terahertz communication to system integration. However, they are …