Results 81 to 90 of about 112,176 (189)

Geometric Metasurface Fork Gratings for Vortex Beam Generation and Manipulation

, 2016
In recent years, optical vortex beams possessing orbital angular momentum have caught much attention due to their potential for high capacity optical communications.
Cai, Yuan, Cheah, Kok Wai, Chen, Shumei, Li, Guixin, Zhang, Shuang   +4 more
core   +2 more sources

Optical vortex-induced forward mass transfer: manifestation of helical trajectory of optical vortex

Optics Express, 2019
The orbital angular momentum of an optical vortex field is found to twist high viscosity donor material to form a micron-scale 'spin jet'. This unique phenomenon manifests the helical trajectory of the optical vortex. Going beyond both the conventional ink jet and laser induced forward mass transfer (LIFT) patterning technologies, it also offers the ...
Ryosuke Nakamura, Haruki Kawaguchi, Muneaki Iwata, Akihiro Kaneko, Ryo Nagura, Satoyuki Kawano, Kohei Toyoda, Katsuhiko Miyamoto, Takashige Omatsu   +8 more
openaire   +3 more sources

Quantum theory of a vortex line in an optical lattice

, 2004
We investigate the quantum theory of a vortex line in a stack of weakly-coupled two-dimensional Bose-Einstein condensates, that is created by a one-dimensional optical lattice.
H. T. C. Stoof, J. R. Abo-Shaeer, J.-P. Martikainen, M. O. Scully, R. Duine   +4 more
core   +2 more sources

Integrated Optical Vortex Microcomb

, 2022
Abstract The explorations of physical degrees of freedom with infinite dimensionalities, such as orbital angular momentum and frequency of light, have profoundly reshaped the landscape of modern optics with representative photonic functional devices including optical vortex emitters1-3 and frequency combs4-6.
Jin Liu, Bo Chen, Yueguang Zhou, Peinian Huang, Chaochao Ye, Qian Cao, Yang Liu, Chanju Kim, Kresten Yvind, Jin Li, Chun-Hua Dong, Songnian Fu, Qiwen Zhan, Xue-Hua Wang, Minhao Pu   +14 more
openaire   +1 more source

Natural shaping of the cylindrically polarized beams

, 2010
We have experimentally and theoretically shown that the circularly polarized beam bearing singly charged optical vortex propagating through a uniaxial crystal can be split after focusing into the radially and azimuthally polarized beams in vicinity of ...
Alexeyev, Constantine, Fadeyeva, Tatyana, Shostka, Nataliya, Shvedov, Vladlen, Volyar, Alexander   +4 more
core   +1 more source

Creation of a stable vector vortex beam with dual fractional orbital angular momentum

Scientific Reports
Recently, vortex beams have been widely studied and applied because they carry orbital angular momentum (OAM). It is widely acknowledged in the scientific community that fractional OAM does not typically exhibit stable propagation; notably, the notion of
Lingyu Wang, Guanxue Wang, Xiangmei Dong, Xiumin Gao, Songlin Zhuang   +4 more
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

Design and Experimental Research of Vortex Beam Mixer

Photonics
Based on the birefringence phenomenon of vortex beam in uniaxial crystals for optical path design, yttrium vanadate crystals and waveplates are used to realize coherent mixing of vortex beam.
Chenghu Ke, Xinwen Zhang, Xizheng Ke, Peng Li   +3 more
doaj   +1 more source

Optical vortex pumped mid-infrared optical parametric oscillator

Optics Express, 2011
The first demonstration of a mid-infrared optical parametric oscillator pumped by 1-μm optical vortex pulses is presented. A 0.5-mJ 2-μm fractional vortex pulse having half-integer topological charge is generated. Using this system, 0.24-mJ vortex pulses with a topological charge of 1 can be created.
Katsuhiko, Miyamoto, Sachio, Miyagi, Masaki, Yamada, Kenji, Furuki, Nobuyuki, Aoki, Masahito, Okida, Takashige, Omatsu   +6 more
openaire   +2 more sources

Transverse and Longitudinal Energy Flows in a Sharp Focus of Vortex and Cylindrical Vector Beams

Applied Sciences
It is shown in this work that, with strong focusing of a beam with optical vortex and circular polarization, three energy flows take place in the focal plane: direct longitudinal, reverse longitudinal and azimuthal transverse flows. Calculations are made
Victor V. Kotlyar, Alexey A. Kovalev, Anton G. Nalimov, Sergey S. Stafeev, Alexey M. Telegin   +4 more
doaj   +1 more source