Metamaterials are composed of periodic subwavelength metallic/dielectric structures that
resonantly couple to the electric and magnetic fields of the incident electromagnetic waves …

Vortex beam carrying orbital angular momentum (OAM) has been widely explored in optical
and microwave regions attributed to its potential characteristics in communication systems …

Pancharatnam-Berry geometric phase has attracted enormous interest in subwavelength
optics and electromagnetics during the past several decades. Traditional theory predicts that …

Artificially engineered metasurfaces provide extraordinary wave control at the
subwavelength scale. However, metasurfaces proposed so far suffer due to limited …

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 …

Frequency conversion processes, such as second-and third-harmonic generation, are
commonly realized in nonlinear optics, offering opportunities for applications in photonics …