Results 11 to 20 of about 42,393 (288)

Spatiotemporal Optical Vortices [PDF]

Physical Review X, 2016
We present the first experimental evidence, supported by theory and simulation, of spatiotemporal optical vortices (STOVs). A STOV is an optical vortex with phase and energy circulation in a spatiotemporal plane.
N. Jhajj, I. Larkin, E. W. Rosenthal, S. Zahedpour, J. K. Wahlstrand, H. M. Milchberg   +5 more
doaj   +7 more sources

Surface optical vortices [PDF]

Physical Review A, 2009
It is shown how the total internal reflection of orbital-angular-momentum-endowed light can lead to the generation of evanescent light possessing rotational properties in which the intensity distribution is firmly localized in the vicinity of the surface.
D. L. Andrews, D. L. Andrews, L. Allen, L. Allen, M. Babiker, V. E. Lembessis   +5 more
core   +5 more sources

Surface Plasmon Resonance Sensors Using Optical Vortices [PDF]

Nanomaterials
This study investigates the change in both the angular position and width of the reflectance minimum of an SPR sensor in the Kretschmann configuration when optical vortices instead of plane waves are used for illumination. An analytical expression of the
George A. Bulzan, Daniela Dragoman
doaj   +2 more sources

Generation of femtosecond polygonal optical vortices from a mode-locked quasi-frequency-degenerate laser [PDF]

Light: Science & Applications
Polygonal optical vortices—a new subset of optical vortices—uniquely enable numerous applications due to the new degrees of freedom offered and their customizable light intensity structure.
Hongyu Liu, Lisong Yan, Liang Wang, Dongfang Li, Shenao Zhang, Xin Liu, Heyan Liu, Kunjian Dai, Qing Wang, Jinwei Zhang   +9 more
doaj   +2 more sources

Optical vortices in fiber

Nanophotonics, 2013
Optical vortex beams, possessing spatial polarization or phase singularities, have intriguing properties such as the ability to yield super-resolved spots under focussing, and the ability to carry orbital angular momentum that can impart torque to ...
Ramachandran Siddharth, Kristensen Poul
doaj   +2 more sources

Optical vortices 30 years on: OAM manipulation from topological charge to multiple singularities. [PDF]

Light Sci Appl, 2019
Shen Y, Wang X, Xie Z, Min C, Fu X, Liu Q, Gong M, Yuan X.   +7 more
europepmc   +2 more sources

Autofocusing and Self-Healing Optical Vortices Realized via Circular Cubic Phase Modulation

Crystals, 2022
Optical vortices have drawn extensive research interests due to their widespread applications in various fields. Therefore, it is of great significance to modulate optical vortices to endow them with more properties.
Haozhe Xiong, Bingyan Wei, Yuan Zhang, Sheng Liu, Peng Li, Yunlong Wu, Jianlin Zhao   +6 more
doaj   +1 more source

Near-Field Evolution of Optical Vortices and Their Spatial Ordering behind a Fork-Shaped Grating

Photonics, 2023
Fork-shaped gratings are periodic structures containing a spatial dislocation known to be used for the production of optical vortices in a far field.
Denis A. Ikonnikov, Sergey A. Myslivets, Vasily G. Arkhipkin, Andrey M. Vyunishev   +3 more
doaj   +1 more source

Optical Vortices shape Optical Tornados

Optics Express, 2023
We demonstrate that by seeding an accelerating ring-Airy beam with a finite number of off-axis optical vortices, it transforms into a Tornado wave (ToW) upon propagation. Using numerical simulations, we show that both the spiraling high-intensity lobes and the optical vortices exhibit angular acceleration and follow interwinding braid-like trajectories.
Apostolos Brimis, Konstantinos G. Makris, Dimitris G. Papazoglou   +2 more
openaire   +2 more sources

Polarization and topological mode dispersion of optical vortices in circular optical fibers [PDF]

Компьютерная оптика, 2019
In this paper we investigated a problem of intermode dispersion within a group of optical vortices with an azimuthal number greater than or equal to 1 in circular optical fibers.
Elena Barshak, Maxim Yavorsky, Dmitriy Vikulin, Boris Lapin, Alexander Volyar, Constantine Alexeyev   +5 more
doaj   +1 more source