Results 31 to 40 of about 43,576 (316)
International Journal of Optics, 2012 Interference of optical beams with optical vortices is often encountered in singular optics. Since interferometry makes the phase observable by intensity measurement, it brings out a host of applications and helps to understand the optical vortex.
P. Senthilkumaran +2 more
doaj +1 more source
Vortex-Peierls States in Optical Lattices [PDF]
, 2006 We show that vortices, induced in cold atom superfluids in optical lattices, may order in a novel vortex-Peierls ground state. In such a state vortices do not form a simple lattice but arrange themselves in clusters, within which the vortices are ...
A. A. Burkov +3 more
core +1 more source
All-fiber SWAP-CNOT gate for optical vortices
Компьютерная оптика, 2021 We study the propagation of optical vortices in a system which consists of a tandem of a multi-helical and twisted anisotropic fiber. We show that at certain resonance regimes of the optical fibers such a system allows one to control sign flipping of the
E.V. Barshak +5 more
doaj +1 more source
Ultrashort intense-field optical vortices produced with laser-etched mirrors [PDF]
, 2007 We introduce a simple and practical method to create ultrashort intense optical vortices for applications involving high-intensity lasers. Our method utilizes femtosecond laser pulses to laser-etch grating lines into laser-quality gold mirrors.
Scarborough, T. +2 more
core +3 more sources
Quadrupole absorption rate for atoms in circularly-polarized optical vortices
Results in Physics, 2021 Twisted light beams, or optical vortices, have been used to drive the circular motion of microscopic particles in optical tweezers and have been shown to generate vortices in quantum gases.
Smail Bougouffa
doaj +1 more source
Topology of Knotted Optical Vortices
, 2007 Optical vortices as topological objects exist ubiquitously in nature. In this paper, by making use of the $\phi$-mapping topological current theory, we investigate the topology in the closed and knotted optical vortices.
+16 more
core +1 more source
Adaptive Optics and Optical Vortices [PDF]
, 2012 The achievement of minimal angular divergence of a laser beam is one of the most impor‐ tant problems in laser physics since many laser applications demand extreme concentration of radiation. Under the beam formation in the laser oscillator or amplifier with optically in‐ homogeneous gain medium and optical elements, the divergence usually exceeds the ...
Garanin, S. G. +2 more
openaire +3 more sources
Optical vortices with starlight: Implications for ground-based stellar coronagraphy
, 2008 Using an l = 1 blazed fork-hologram at the focal plane of the Asiago 122 cm telescope, we obtained optical vortices from the stellar system Rasalgethi (alpha Herculis) and from the single star Arcturus (alpha Bootis).
A. Bianchini +33 more
core +1 more source
Optical Vortices from Liquid Crystal Droplets [PDF]
Physical Review Letters, 2009 We report on the generation of mono- and polychromatic optical phase singularities from micron-sized birefringent droplets. This is done experimentally by using liquid crystal droplets whose three dimensional architecture of the optical axis is controlled within the bulk by surfactant agents.
Brasselet, Etienne +3 more
openaire +4 more sources
Structured Optical Toroidal Vortices with Rotational Symmetry
PhotonicsToroidal vortices, as intriguing topological structures, play a fundamental role across a wide range of physical fields. In this study, we theoretically propose a family of structured optical toroidal vortices as generalized forms of toroidal vortices in
Jinzhan Zhong, Qiwen Zhan
doaj +1 more source