Results 81 to 90 of about 1,828,977 (180)

A Parametric Study of Vane and Air-jet Vortex Generators [PDF]

, 1998
An experimental parametric sturdy of vane and air-jet vortex generators in a turbulent boundary layer has been carried out. Experiments were carried out in two facilities, one with a free-stream velocity of 20 m/s and a boundary layer thickness (6) of ...
Bray, Tim P.
core   +2 more sources

Optimal E-Field Vector Combination for a Highly Focused Antenna-Array [PDF]

, 2014
A near-field highly focused circular phased-array antenna for 5.8-GHz radio frequency identification (RFID) applications is presented. The electric field (E-field) at the focus is enhanced by a constructive vector combination in a three-dimensional (3-D)
Perallos, Asier, Martinez, R, Sharma, A, Batchelor, John C., Garcia Zuazola, Ignacio Julio, de-Haro Ariet, L   +5 more
core   +1 more source

Generation of THz vector and scalar vortex beams by optical rectification along threefold symmetry axis in zinc blende crystals

APL Photonics
Synthesis of THz frequency fields with generalized orbital angular momentum, the so called higher-order Poincaré beams are of interest to future communications systems and charged particle accelerators.
Yaqun Liu, Valdas Pasiskevicius
doaj   +1 more source

Switchable generation and dynamic evolution of vector vortex beams

Optics Express
The vector vortex beams (VVBs) are endowed with helical phase and vector polarization. The rich optical properties of VVBs have attracted extensive concern. Here the geometric phase is applied to manipulate both the phase and polarization of light for switchable generation of VVBs by vortex plates.
Junna Yao, Xiangle Li, Xinhua Jiang, Shuimei Wu, Qiwen Zhan, Anting Wang   +5 more
openaire   +2 more sources

A Gaussian to Vector Vortex Beam Generator with a Programmable State of Polarization. [PDF]

Materials (Basel), 2022
Piłka J, Kwaśny M, Filipkowski A, Buczyński R, Karpierz MA, Laudyn UA.   +5 more
europepmc   +1 more source

Second harmonic of higher-order Poincaré sphere beam with two orthogonal 5%MgO:PPLN crystals

APL Photonics
In this work, the second harmonic (SH) of higher-order Poincaré sphere (HOPS) beam was introduced and demonstrated with two orthogonal 5%MgO:PPLN crystals.
Qinan Jiang, Minglin Zhao, Yuanxiang Wang, Shuolin Wang, Jiantai Dou, Jun Liu, Bo Li, Youyou Hu   +7 more
doaj   +1 more source

Modelling vortex-vortex and vortex-boundary interaction [PDF]

, 2010
The motion of two-dimensional inviscid, incompressible fluid with regions of constant vorticity is studied for three classes of geophysically motivated problem. First, equilibria consisting of point vortices located near a vorticity interface generated
Nelson, R.B.
core  

Tunable supercontinuum light vector vortex beam generator using a q-plate [PDF]

, 2013
Spatially coherent multicolored optical vector vortex beams were created using a tunable liquid crystal q-plate and a supercontinuum light source. The feasibility of the q-plate as a tunable spectral filter (switch) was demonstrated, and the polarization
Sebastiao Pratavieira, Ebrahim Karimi, Pratavieira, Sebastião, Nguyen, Thien, MARRUCCI, LORENZO, Thien, An Nguyen, Rumala, Yisa S, Alfano, Robert R., Milione, Giovanni, Karimi, Ebrahim, Slussarenko, S., Giovanni Milione, Rumala, Yisa S., Alfano, Robert R, Thien An Nguyen, Nolan, Daniel, Yisa S. Rumala, Robert R. Alfano, Slussarenko, Sergei, Zabir Hossain, Sergei Slussarenko, Daniel Nolan, Hossain, Zabir   +22 more
core   +1 more source

Generation of Coherent Extreme-Ultraviolet Vector-Vortex beams

, 2021
International audienceWe theoretically and experimentally introduce a novel structured EUV beam a vector-vortex which combines the helical phase and inhomogeneous polarization of vortex and vector beams.
Pandey, Alok Kumar, Baynard, Elsa, Pittman, Moana, Plaja, Luis, de las Heras, Alba, Hernández-García, Carlos, Román, Julio San, Kazamias, Sophie, Dovillaire, Guillaume, Durfee, Charles G, Guilbaud, Olivier   +10 more
core   +2 more sources

Photon acceleration of high-intensity vector vortex beams into the extreme ultraviolet

Communications Physics
Extreme ultraviolet (XUV) light sources allow for the probing of bound electron dynamics on attosecond scales, interrogation of high-energy-density matter, and access to novel regimes of strong-field quantum electrodynamics.
Kyle G. Miller, Jacob R. Pierce, Fei Li, Brandon K. Russell, Warren B. Mori, Alexander G. R. Thomas, John P. Palastro   +6 more
doaj   +1 more source