Different from conventional optical waveplates, which suffer from limited functionalities and bulky configurations, metasurfaces provide full-range birefringence control along with unprecedented capabilities of wavefront shaping at any wavelength range of interest with properly designed anisotropic meta-atoms, thereby resulting in miniaturized planar meta-waveplates with excellent and fancy functionalities beyond the conventional counterparts. In this Letter, we design a set of dielectric metasurface quarter-wave plates (QWPs) that enable efficient circular-to-linear polarization conversion along with complete phase control over the converted linearly polarized beam under circularly polarized (CP) excitation. Capitalizing on this meta-QWP platform, we numerically demonstrate two advanced multifunctional meta-QWPs (i.e., a beam-steerer and a focusing metalens) to generate different wavefronts with homogeneous and inhomogeneous linear polarization distributions under CP excitation, mimicking the functionalities of cascaded multi-stage optical components. Owing to the compactness, flexibility, and versatility, such meta-QWPs are capable of integrating more advanced applications in polarization optics.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OL.456910 | 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 PDFArticle Synopsis
- The miniaturization of optical systems is essential for applications like augmented reality and micro sensors, but traditional bulky optical elements hinder progress.* -
- A new multifunctional metasurface (MFMS) integrates a lens, prism, and quarter-wave plate into a thin element, allowing for collimation, beam deflection, and polarization conversion.* -
- The MFMS demonstrates impressive performance, achieving high diffraction efficiency and polarization conversion, making it suitable for compact atomic clocks and efficient light focusing.*
Active control of polarization using metasurfaces is crucial in terahertz optics, offering promising advancements in sensing, imaging, and telecommunications. Here, we developed reconfigurable terahertz multifunctional wave plates by leveraging vanadium dioxide/germanium hybrid metasurfaces. This approach allows for mutual role changing of metasurface among quarter-wave plate, half-wave plate, and full-wave plate, facilitated by the introduction of continuous-wave and pulse lasers.
View Article and Find Full Text PDFDirectional Phase and Polarization Manipulation Using Janus Metasurfaces.
Adv Sci (Weinh)
October 2024
Terahertz Technology Innovation Research Institute, and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No. 516 JunGong Road, Shanghai, 200093, China.
Article Synopsis
- Janus metasurfaces are innovative 2D materials that can manipulate electromagnetic waves in both directions, making them useful for applications in data security and information processing.
- Current designs are limited to controlling wave direction or phase, but a new approach combines multiple functionalities to allow for directional control over both phase and polarization of terahertz waves.
- This research demonstrates practical applications of these advanced Janus metasurfaces, enabling methods like polarization conversion and focused detection, which could lead to the development of compact devices for imaging and data storage.
Quarter-Wave Plate Metasurfaces for Generating Multi-Channel Vortex Beams.
Nanomaterials (Basel)
February 2024
Department of Physics, Changzhi University, Changzhi 046011, China.
Metasurfaces of quarter-wave plate (QWP) meta-atoms have exhibited high flexibility and versatile functionalities in the manipulation of light fields. However, the generation of multi-channel vortex beams with the QWP meta-atom metasurfaces presents a significant challenge. In this study, we propose dielectric metasurfaces composed of QWP meta-atoms to manipulate multi-channel vortex beams.
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!