The efficient transport and engineering of photonic orbital angular momentum (OAM) lie at
the heart of various related classical and quantum applications. Here, by leveraging the …

Orbital angular momentum (OAM) conservation plays an important role in shaping and
controlling structured light with nonlinear optics. The OAM of a beam originating from three …

Orthogonal optical coding is widely used in classical multi-user communication networks.
Using the phase conjugation property of stimulated parametric down-conversion, we extend …

Surface topography detection can extract critical characteristics from objects, playing an
important role in target identification and precision measurement. Here, an optical method …

Mathematically, any function can be expressed as the operation form of another function.
Here, the idea is introduced into an optical system to generate structured light. In the optical …

Vortex beams with orbital angular momentum play a crucial role in increasing the
information capacity in optical communications. The magnitude of orbital angular momentum …

Nonlinear optics with structured light can provide a host of important functions for shaping
the spatial and temporal structure of light, and the most commonly used is frequency …

Curvature detection can reveal significant characteristics of target areas, playing a pivotal
role in micro–nano fabrication. The Newton's rings experiment is one of the classical …

Structured light, where complex optical fields are tailored in all their degrees of freedom, has
become highly topical of late, advanced by a sophisticated toolkit comprising both linear and …

Analogous to the regular lens, which spatially maps plane waves in the space domain to
distinct points in the Fourier domain, the angular lens establishes the mapping relations …