We experimentally demonstrate vector beams having an elliptical symmetry of polarization, breaking the cylindrical symmetry of vector beams (e.g., radially polarized beams). Applications of such beams vary from material processing, lithography, and optical memories to excitation of elliptically shaped nanoparticles and plasmonic structures.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/ol.34.001669 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Multifunctional all-dielectric quarter-wave plate metasurfaces for generating focused vector beams of Bell-like states.
Nanophotonics
April 2024
School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China.
The generation of vector beams using metasurfaces is crucial for the manipulation of light fields and has significant application potential, ranging from classical physics to quantum science. This paper introduces a novel dielectric metasurface composed of quarter-wave plate (QWP) meta-atoms, known as a QWP metasurface, designed to generate focused vector beams (VBs) of Bell-like states under right circularly polarized illumination. The propagation phase imparted on both the co- and cross-polarized components of the output field constructs hyperbolic and helical phase profiles with topological charge , whereas the Pancharatnam-Berry (PB) phase acts only on the cross-polarized component to construct another helical phase profile with topological charge .
View Article and Find Full Text PDFIn recent years, structured beams have emerged as an attractive and promising area of research, and nondiffracting beams and vector beams stand out as two particularly important categories of structured beams. Recognizing the significance of both beams, it is valuable to build a connection between these two kinds of structured beams. Here, we propose a kind of multi-periodic full Poincaré beam (MP-FPB), whose polarization states can cover the Poincaré sphere (PS) surface multiple times.
View Article and Find Full Text PDFCylindrical vector beam multiplexing holography employing spin-decoupled phase modulation metasurface.
Nanophotonics
February 2024
Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China.
Cylindrical vector beams (CVBs) hold considerable promise as high-capacity information carriers for multiplexing holography due to their mode orthogonality. In CVB holography, phase holograms are encoded onto the wave-front of CVBs with different mode orders while preserving their independence during reconstruction. However, a major challenge lies in the limited ability to manipulate the spatial phase and polarization distribution of CVBs independently.
View Article and Find Full Text PDFEffect of the oblique incidence of radiation beams on emerging radiation behind lead and concrete shields: a multilayer method for dose transmission calculations.
Phys Med Biol
December 2024
Hospital Clínico Universitario Virgen de la Arrixaca-IMIB, ctra. Madrid-Cartagena, 30120 El Palmar (Murcia), Spain.
. For calculating shielding in x-ray rooms, it is often assumed that the beams impinge perpendicularly on the protective barriers. This is not always true, but this premise simplifies the calculations and enhances protection by being a conservative calculation.
View Article and Find Full Text PDFIn this study, we propose a novel, to the best of our knowledge, method for designing low-cost, continuously spatially variable polarizers using polarization holography. We use these devices to generate vector vortex beams and detect scalar vortex beams. Our approach begins with designing polarization holograms that act as polarizers, each with distinct transmission axes recorded at various polar angles on polarization-sensitive materials using a dynamic recording system.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!