A5079061521- Orbital Angular Momentum in Optics
- Microfluidic and Bio-sensing Technologies
- Plasmonic and Surface Plasmon Research
- Sperm and Testicular Function
- Digital Holography and Microscopy
- Metamaterials and Metasurfaces Applications
- Smart Grid and Power Systems
- Photorefractive and Nonlinear Optics
- Topological Materials and Phenomena
- Quantum optics and atomic interactions
- Smart Grid Security and Resilience
- Cold Atom Physics and Bose-Einstein Condensates
- Power System Optimization and Stability
- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
Henan University
2022-2023
Abstract Optical vortices (OVs) with controllable orbital angular momentum (OAM) distributions have potential applications in optical communication and manipulation. However, the source of segmented phase gradients generated by existing methods can be used only at a short distance because their low power. In this study, based on coherent combining technology, we proposed method to generate controlled-phase vortex (COV). Compared traditional OVs, magnitude direction local OAM COV are...
Abstract Optical vortex lattices (OVLs) are gaining increased research attention owing to their unique features related intensity and phase structure. Interference is a common method for generating an OVL. However, the topological charge (TC) of single building block in OVL fixed cannot be modulated, thereby limiting its applicability. This study entailed use multiplication generate high‐order facilitate arbitrary modulation TC. The generated exhibited Talbot effect during transmission, it...
Optical vortex phase beams have unique amplitudes and distributions, rendering them sensitive to the position symmetry of modulating structures. This sensitivity can facilitate their applicability optical communications. We propose a method for topological charge input using pinhole screen. By changing arrangement match beam considering Fresnel diffraction theory, transmission light field is calculated numerically. In addition, intensity map adjustable charges measured near origin, with...
This study investigated the conical diffraction characteristics in honeycomb lattice of a Λ-type three-level energy system for rubidium atomic configuration. Its band structure incorporates Dirac cones accordance with plane wave expansion method. We determined that rotation angle θ three vectors strongly impacted cone profile. For θ=0° and 60°, reciprocal space, states were excited, symmetric was supported. When 0<θ<60°, an asymmetric dark notch appeared on outer edge ring. The results...
Abstract This article reports the preparation of high orbital angular momentum (OAM) using non-uniform beam interference both theoretically and experimentally. study commences with reconstruction Bessel–Gaussian vortex beams utilizing power-exponential-phase vortices. Subsequently, two reconstructed are used for interfere, followed by application phase multiplication technique. methodology enables higher-order operations on interfered beams, thereby escalating their topological charges...