The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …

Metasurfaces provide a compact and powerful platform for manipulating the fundamental
properties of light, and have shown unprecedented capabilities in both optical holographic …

As an important imaging technique, holography has been realized with different physical
dimensions of light, including polarization, wavelength, and time. Recently, quantum …

Optical knots and links have attracted great attention because of their exotic topological
characteristics. Recent investigations have shown that the information encoding based on …

Polarization singularities, describing the points where the state of polarization is
indeterminate, reveal the polarization topology in vectorial optical fields, which include two …

Structured light, also known as tailored light, shaped light, sculpted light, or custom light,
refers to a series of special light beams with spatially variant amplitudes and phases …

The generation of focused vector beams using metasurfaces is important for develo**
classical and quantum applications and exploring the exotic structures of light fields. In this …

Holography provides an approach to reconstructing both intensity and phase information,
and has many applications for microscopic imaging, optical security, and data storage …

Active metasurfaces whose optical properties can be tuned by an external stimulus have
attracted great research interest recently. Introduction of VO_2 phase change material in all …

Vortex beams are currently drawing a great deal of interest, from fundamental research to
several promising applications. While their generation in bulky optical devices limits their …