Results 51 to 60 of about 102,639 (286)

Optical Communication Performance of Cylindrical Vector Partially Coherent Laguerre–Gaussian Beams in Atmospheric Turbulence

Photonics
The optical communication performance of cylindrical vector partially coherent Laguerre–Gaussian (PCLG) beams in different atmospheric turbulence models are investigated.
Meng Liu, Linxuan Yao, Yaru Gao, Hui Zhang, Yangsheng Yuan, Bohan Guo, Huimin Shi   +6 more
doaj   +1 more source

Transverse intensity at the tight focus of a second-order cylindrical vector beam

Компьютерная оптика, 2021
In this paper, an effect of a reverse energy flow at the focus of a second-order cylindrical vector beam which passed through amplitude zone plate was investigated with a scanning near-field optical microscope.
E.S. Kozlova, S.S. Stafeev , S.A. Fomchenkov, V.V. Podlipnov, V.V. Kotlyar   +4 more
doaj   +1 more source

Characterization of vector diffraction-free beams

, 2011
It is observed that a constant unit vector denoted by $\mathbf I$ is needed to characterize a complete orthonormal set of vector diffraction-free beams. The previously found diffraction-free beams are shown to be included as special cases. The $\mathbf I$
Bouchal, Chun-Fang Li, Davis, Davis, Durnin, Durnin, Hall, Jordan, Lax, Li, Shuang-Yan Yang, Ting-Ting Wang, van Enk, Youngworth, Zapata-Rodríguez   +14 more
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Frame dragging with optical vortices [PDF]

, 2011
General Relativistic calculations in the linear regime have been made for electromagnetic beams of radiation known as optical vortices. These exotic beams of light carry a physical quantity known as optical orbital angular momentum (OAM).
A Einstein, AE Siegman, FW Dyson, GR Fowles, J Strohaber, J. Strohaber, JD Jackson, KD Olum, L Allen, L Allen, M Babiker, MF Andersen, MO Scully, MP Hobson, P Coles, RA Beth, RC Tolman, RL Mallet, RL Mallett, SS Doeleman, T Tajima, V Yanovsky   +21 more
core   +3 more sources

Encoding Magnetic Anisotropies in Digital Light Processing 3D Printing

Advanced Functional Materials, EarlyView.
A hybrid magnetic device—combining a coaxial coil within a nested Halbach array—is presented, integrated into a DLP 3D printer to enable spatially resolved magnetic field control. This system enables complex, multimodal responses by programming liquid crystal elastomer resins for magnetic and thermal actuation, and by inducing electrically conductive ...
Eléonore Aïdonidis, Andrea Cosola, Pierre Bourdon, Hichem Dammak, Marco Sangermano, Frédéric Demoly, Marco Faustini, Amélie Pérot, Didier Lairez, Rakine Mouhoubi, Sébastien Blanquer, Giancarlo Rizza   +11 more
wiley   +1 more source

Focused Azimuthally Polarized Vector Beam and Spatial Magnetic Resolution below the Diffraction Limit

, 2016
An azimuthally electric-polarized vector beam (APB), with a polarization vortex, has a salient feature that it contains a magnetic-dominant region within which electric field ideally has a null while longitudinal magnetic field is maximum.
Capolino, Filippo, Guclu, Caner, Veysi, Mehdi   +2 more
core   +2 more sources

Focusing of high numerical aperture cylindrical-vector beams

Optics Express, 2000
Cylindrical-vector beams are of increasing recent interest for their role in novel laser resonators and their applications to electron acceleration and scanning microscopy. In this paper, we calculate cylindrical-vector fields, near the focal region of an aplanatic lens, and briefly discuss some applications.
K, Youngworth, T, Brown
openaire   +2 more sources

Biomimetic surface structuring using cylindrical vector femtosecond laser beams [PDF]

Scientific Reports, 2017
AbstractWe report on a new, single-step and scalable method to fabricate highly ordered, multi-directional and complex surface structures that mimic the unique morphological features of certain species found in nature. Biomimetic surface structuring was realized by exploiting the unique and versatile angular profile and the electric field symmetry of ...
Skoulas, Evangelos, Manousaki, Alexandra, Fotakis, Costas, Stratakis, Emmanuel   +3 more
openaire   +3 more sources

Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires

Advanced Functional Materials, EarlyView.
Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar, Jorge Marqués‐Marchán, Sara Catalano, Agustina Asenjo, Michael Foerster, Miguel Angel Niño, Manuel Vazquez, Fèlix Casanova, Arantxa Fraile Rodríguez, Rafael P. Del Real, Oksana Chubykalo‐Fesenko, Cristina Bran   +11 more
wiley   +1 more source