The ability to control light direction with tailored precision via facile means is long‐desired in
science and industry. With the advances in optics, a periodic structure called diffraction …

In recent years, vortex beams with orbital angular momentum (OAM) have attracted more
and more attention. The wavefront of the OAM beams is helical, the intensity at the center of …

Since the second half of the 20th century, ideas to develop methods for the formation of
optical vortices (OVs) or OV beams–regions of circular motion of energy flow in an …

A high-efficiency technique for optical vortex (OV) generation is proposed and
demonstrated. The technique is based on liquid crystal fork gratings with space-variant …

Optical beam sha** plays a key role in optics and photonics. In this work, meta-q-plate
featured by arbitrarily space-variant optical axes is proposed and demonstrated via liquid …

Nanoscale compact optical vortex generators promise substantially significant prospects in
modern optics and photonics, leading to many advances in sensing, imaging, quantum …

Arbitrary vector beams (VBs) are realized by the designed polarization converters and
corresponding vector-photoaligned q-plates. The polarization converter is a specific twisted …

Nonlinear beam sha** can be dynamically controlled by temperature or polarization to
form switchable nonlinear structured beams, which constitute an unprecedented system for …

Polymer‐stabilized blue phase liquid crystal (PS‐BPLC) is emerging as a promising
candidate for next‐generation photonic applications due to its attractive features: nano …

Due to the fantastic properties and diverse applications of specific beams, optical beam
sha** has attracted intensive attentions recently. Generally, these beams can be …