Results 41 to 50 of about 1,358,362 (273)

Generation of terahertz vector beams using dielectric metasurfaces via spin-decoupled phase control

Nanophotonics, 2020
Cylindrical vector beams (CVBs), being a special kind of beams with spatially variant states of polarizations, are promising in photonics applications, including high-resolution imaging, plasmon excitation, optical trapping, and laser machining. Recently,
Xu Yuehong, Zhang Huifang, Li Quan, Zhang Xueqian, Xu Quan, Zhang Wentao, Hu Cong, Zhang Xixiang, Han Jiaguang, Zhang Weili   +9 more
doaj   +1 more source

Metasurface-generating high purity narrow linewidth cylindrical vector beams: power scaling and its limitation

Frontiers in Physics, 2023
1.89 kW cylindrical vector beams (CVBs) at 1,064 nm with the 3 dB linewidth being about 0.08 nm have been generated from a narrow linewidth all-fiber linearly-polarized laser by metasurface extra-cavity conversion.
Haokun Li, Haokun Li, Lianghua Xie, Chun Zhang, Rumao Tao, Qiang Shu, Min Li, Benjian Shen, Xi Feng, Lixin Xu, Jianjun Wang   +10 more
doaj   +1 more source

Polar POLICRYPS diffractive structures generate cylindrical vector beams [PDF]

Applied Physics Letters, 2015
Local shaping of the polarization state of a light beam is appealing for a number of applications. This can be achieved by employing devices containing birefringent materials. In this article, we present one such enables converting a uniformly circularly polarized beam into a cylindrical vector beam (CVB).
Alj D, Paladugu S, CAPUTO, Roberto, Volpe G, UMETON, Cesare Paolo   +4 more
openaire   +6 more sources

Experimental Generation of Structured Light Beams through Highly Anisotropic Scattering Media with an Intensity Transmission Matrix Measurement

Photonics, 2023
Structured light beams have played important roles in the fields of optical imaging and optical manipulation. However, light fields scatter when they encounter highly anisotropic scattering media, such as biological tissue, which destroys their original ...
Qiannan Lei, Haokai Gong, Shijie Tu, Yangjian Cai, Qian Zhao   +4 more
doaj   +1 more source

Polarization converter for higher-order laser beams based on the use of forming binary diffractive optical elements as beam splitter

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
We propose a new approach to generating a pair of initial beams for a polarization converter that operates by summing up two opposite-sign circularly polarized beams.
S. V. Karpeev, S. N. Khonina, O. Yu. Moiseev, S. V. Alferov, A. V. Volkov   +4 more
doaj   +3 more sources

Reverse energy flow in vector modes of optical fibers

Компьютерная оптика, 2023
In this paper, the propagation of a second-order cylindrical vector beam in gradient-index and microstructured fibers is numerically simulated using the RSoft Fullwave software.
S.S. Stafeev, A.D. Pryamikov, G.K. Alagashev, V.V. Kotlyar   +3 more
doaj   +1 more source

Cryogenic Deformation Behavior of TiAl and Insights Into Embrittlement After High‐Temperature Exposure Combined With Secondary Ion Mass Spectroscopy of Near Surface Chemistry

Advanced Engineering Materials, EarlyView.
Near‐surface deuterium enrichment profiles for different microstructural types of TiAl after exposure at 700 °C in a heavy water‐containing environment. The deuterium levels are significantly higher than expected from natural occurrence, indicating that the heavy water dissociated during the exposure treatment and entered the specimens.
Jonathan D. H. Paul, Alexander Welle, Dirk Matthiessen, Michael Oehring, Fritz Appel, Florian Pyczak   +5 more
wiley   +1 more source

Generation of cylindrical vector beams based on common-path interferometer with a vortex phase plate

, 2016
Cylindrical vector (CV) beams have found increasing applications in physics, biology, and chemistry. To generate CV beams, interferometric technique is popularly adopted due to its flexibility.
Liang, Yansheng, Yu, Xianghua, Yan, Shaohui, Yao, Baoli, Min, Junwei, Lei, Ming   +5 more
core   +1 more source

Wearable Smart Patches on Sustainable Chitosan With Reversible Microbial Growth‐Inhibitory Properties

Advanced Functional Materials, EarlyView.
ABSTRACT Chitosan, a polysaccharide upcycled from biowaste, has long promised sustainable, biocompatible, and antimicrobial films and devices, an appeal reinforced by its recent regulatory recognition, with several chitosan‐based antibacterial dressings gaining clearance through the Food and Drug Administration's 510(k) pathway.
Jacopo Nicoletti, Kubra Kocak, Andrea Michel, Enrico Cavarzerani, Ali Raza, Petr Rohzin, Nouha Loudhaief, Saimir Frroku, Nicolò Baldovin, Hazrat Bilal, Alvise Perosa, Maurizio Selva, Flavio Rizzolio, Luca Sbuelz, Sabrina Tamburini, Domenico De Fazio, Giovanni Antonio Salvatore   +16 more
wiley   +1 more source

A parametric study of alternative support systems for cylindrical GRP storage vessels [PDF]

, 2002
Paper presenting a parametric study of alternative support systems for cylindrical GRP storage ...
Tooth, A.S., Nash, D.H., Flaherty, A.E., Banks, W.M.   +3 more
core   +3 more sources