Results 201 to 210 of about 70,205 (364)

Stimulated Raman Scattering with Optical Vortex Beams

Advanced Photonics Research, EarlyView.
This study presents exact analytical expressions for stimulated Raman scattering with Laguerre‐Gaussian beams, revealing signal dependence on topological and hyperbolic momentum. The results provide a theoretical foundation for coherent Raman imaging and detecting orbital angular momentum of light via structured light in nonlinear optics.
Minhaeng Cho
wiley   +1 more source

Imaging Photonic Resonances within an All‐Dielectric Metasurface via Photoelectron Emission Microscopy

Advanced Photonics Research, EarlyView.
Photonic resonances within a dielectric metasurface are investigated using photoelectron emission microscopy (PEEM) and finite‐difference time‐domain simulations. An electron inelastic mean free path of 35 ± 10 nm is extracted from comparisons between microscopy and simulations.
Andrew R. Kim, Chloe F. Doiron, Fernando J. Vega, Jaeyeon Yu, Alex M. Boehm, Joseph P. Klesko, Igal Brener, Raktim Sarma, Alexander Cerjan, Taisuke Ohta   +9 more
wiley   +1 more source

Helicity multiplexed broadband metasurface holograms [PDF]

, 2015
Dandan Wen, Fuyong Yue, Guixin Li, Guoxing Zheng, Kinlong Chan, Shu‐Mei Chen, Ming Chen, King‐Fai Li, Polis Wing Han Wong, Kok‐Wai Cheah, Edwin Yue‐Bun Pun, Shuang Zhang, Xianzhong Chen   +12 more
openalex   +1 more source

Precision Construction of Chiral Optical Fields with Nine Controllable Degrees of Freedom

Advanced Photonics Research, EarlyView.
Chiral optical fields (COFs) offer multiple controllable degrees of freedom (DOFs), enabling applications in optical tweezers, manufacturing, and encryption. However, achieving precise sidelobe control remains a challenge. This work introduces a modular multilayer annular phase plate to fine‐tune COFs by manipulating nine DOFs.
Duo Deng, Xing Liu, Zixin Xu, Zhenjun Yang, Yan Li   +4 more
wiley   +1 more source

A high efficiency wideband co‐polarised metalens antenna

IET Microwaves, Antennas & Propagation
The traditional co‐polarised metasurface achieves 360° phase coverage only at the resonant frequency but not full phase coverage across a wide bandwidth. This paper proposes a multilayer structure metasurface, which composes of five layers of metal patch
JiaJun Liang, Zhao Wu, Long Li, YanHu Huang   +3 more
doaj   +1 more source

Hybridized resonances to design tunable binary phase metasurface unit cells

, 2014
Nadège Kaïna, Matthieu Dupré, Mathias Fink, Geoffroy Lerosey   +3 more
openalex   +1 more source

Electromagnetic Field Scattering on rf-SQUID Based Metasurfaces [PDF]

, 2015
J.G Сaputo, Ildar R. Gabitov, Zhaxylyk A. Kudyshev, T. Kupaev, A. I. Maĭmistov   +4 more
openalex   +1 more source

Spherical and Aspherical Lenses for Boosting the Performance of Terahertz Imaging Systems

Advanced Photonics Research, EarlyView.
This study investigates the enhancement of terahertz (THz) detection through the terajet effect using mesoscale dielectric lenses of various geometries. Spherical, aspherical, and cubic polytetrafluoroethylene lenses are evaluated at 0.15 and 0.3 THz, demonstrating significant improvements in responsivity and noise reduction.
El Hadj Abidi, Jaime Calvo‐Gallego, Alejandro Schulman, Miguel Ferrando‐Bataller, Oleg V. Minin, Igor V. Minin, Jesus E. Velázquez‐Pérez, Yahya Moubarak Meziani   +7 more
wiley   +1 more source

All-dielectric subwavelength metasurface focusing lens

, 2014
Paul R. West, James L. Stewart, Alexander V. Kildishev, Vladimir M. Shalaev, V. V. Shkunov, Friedrich P. Strohkendl, Yuri A. Zakharenkov, Robert K. Dodds, Robert W. Byren   +8 more
openalex   +1 more source

Optical Wireless Communications with Metasurfaces: Current Status and Potential for Intelligent Communications

Advanced Photonics Research, EarlyView.
Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang, Chengwei Fang, Md Osman Ali, Xiaojun Chen, Safa Alghadi, Shuo Li, Jiayuan He, Sithamparanathan Kandeepan   +7 more
wiley   +1 more source