Results 81 to 90 of about 1,769,237 (152)

Enhancing the Spin Hall Effect of Cylindrically Polarized Beams

Micromachines
Two linked gear wheels in a micromachine can be simultaneously rotated in opposite directions by using a laser beam that has in its section areas the spin angular momentum (SAM) of the opposite sign.
Alexey A. Kovalev, Anton G. Nalimov, Victor V. Kotlyar   +2 more
doaj   +1 more source

Vector Spring 2011

, 2011
Vector is the student engineering magazine on campus. Published by the Student Engineering Council, Vector is completely written, managed, and designed by students for students.
University of Texas at Austin
core   +1 more source

Thermal Atoms Facilitate Intensity Clipping Between Vectorial Dual‐Beam Generated by a Single Metasurface Chip

Advanced Science
Manipulating vector beams is pivotal in fields such as particle manipulation, image processing, and quantum communication. Flexibly adjusting the intensity distribution of these beams is crucial for effectively realizing these applications.
Chen Qing, Jialong Cui, Lishuang Feng, Dengke Zhang   +3 more
doaj   +1 more source

Spin Hall effect of linearly polarized light passed through a metasurface

Компьютерная оптика
The density of the longitudinal component of the spin angular momentum (SAM) vector is calculated for a paraxial vector Gaussian beam with a periodic one-dimensional modulation.
A.G. Nalimov, A.A. Kovalev
doaj   +1 more source

Vector Spring 2018

, 2018
Vector is the student engineering magazine on campus. Published by the Student Engineering Council, Vector is completely written, managed, and designed by students for students.
University of Texas at Austin
core   +1 more source

Experimental generation of scalar and vector vortex Pearcey–Gauss beams

JPhys Photonics
In this manuscript, we put forward two new types of structured light beams, the vortex Pearcey–Gauss (VPeG) beam, with a homogeneous polarisation distribution, and the vector VPeG (VVPeG) beam, with a non-homogeneous polarisation distribution. The latter
Valeria Rodríguez-Fajardo, Gabriela Flores-Cova, Carmelo Rosales-Guzmán, Benjamin Perez-Garcia   +3 more
doaj   +1 more source

Simplifying mmWave Transmission: A Time Modulated Array at 73 GHz With Beam Steering and Direct Digital Modulation of QPSK, 8PSK and 16QAM to 128QAM

IEEE Journal of Microwaves
We describe a beam steering 73 GHz Time Modulated Array (TMA) system that provides direct digital vector symbol modulation onto a carrier. This concept removes the need for conventional RF modulator hardware in a TX RF chain and requires only a local ...
Edward A. Ball, Sumin David Joseph
doaj   +1 more source

Rotational Doppler Effect of Vector Beams

Photonics
The optical rotational Doppler effect occurs when vortex beams are scattered by rotating objects and demonstrate the Doppler frequency shifts in scattered beams, which are associated with the optical angular momentum of vortex beams and the relative ...
Hehe Li, Dong Xu, Xinzhong Li
doaj   +1 more source

Vector Fall 2018

, 2018
Table of Contents: The Digital Dreamland (p. 4) -- The Earliest Online Communities (p. 6) -- Nostalgic Thoughts (p. 9) -- The Evolution of Social Media (p. 10) -- The Digital Divide (p. 12) -- The Deep Web (p. 14) -- The Future of Fitness (p.
University of Texas at Austin
core   +1 more source

Cylindrical vector beam-splitters

, 2011
We show that radial and azimuthal polarizations can be separated with a circular sub-wavelength grating. The proposed grating-based beam-splitter can be used to generate cylindrical vector beams from circularly polarized ...
Jiao Lin (18026746), Federico Capasso (1394371), Patrice Genevet (1552678)   +2 more
core