Results 231 to 240 of about 1,160,454 (280)

Cascaded metasurface for polarization-dependent varifocal vortex beam manipulation. [PDF]

Nanophotonics
Xu W, Zhao C, Li H, Li J, Tan Q, Liu Y, Xu H, Shen Y, Yao J.   +8 more
europepmc   +1 more source

Creation of a stable vector vortex beam with dual fractional orbital angular momentum. [PDF]

Sci Rep
Wang L, Wang G, Dong X, Gao X, Zhuang S.
europepmc   +1 more source

Correlated states controlled by a tunable van Hove singularity in moiré WSe₂ bilayers. [PDF]

Nat Commun
Knüppel P, Zhu J, Xia Y, Xia Z, Han Z, Zeng Y, Watanabe K, Taniguchi T, Shan J, Mak KF.   +9 more
europepmc   +1 more source

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Sculpting complex polarization singularity networks.

Optics Letters, 2018
Polarization singularities in vectorial light fields have become an important tool for different cutting-edge applications such as information processing with integer information units.
E. Otte, C. Denz
semanticscholar   +3 more sources

Polarization singularity democracy: WYSIWYG.

Optics Letters, 2004
The canonical point singularity of elliptically polarized light is a C point, an isolated point of circular polarization surrounded by a field of polarization ellipses. The defining singular property of a C point is that the surrounding ellipses rotate about the point. It is shown that this rotation is seen only for a particular line of sight (LOS) and,
I. Freund
semanticscholar   +3 more sources

Polarization singularity index determination by using a tilted lens.

Applied Optics, 2021
The superposition of spin and orbital angular momentum states of light generates polarization singularities. By perturbing and disintegrating their component orbital angular momentum (OAM) states, the polarization singularity indices can be determined ...
B. Komal, Deepa Sathyanarayanan, Sunil Kumar, P. Senthilkumaran   +3 more
semanticscholar   +1 more source

Polarization singularity analysis of Mueller-matrix invariants of optical anisotropy of biological tissues samples in cancer diagnostics

Journal of Optics, 2021
An approach of azimuthally invariant Mueller-matrix description of the formation of polarization singularities networks of object fields of optically anisotropic biological tissues is proposed. The main formation scenarios of the topological polarization-
V. Ushenko, L. Trifonyuk, Y. Ushenko, O. Dubolazov, M. Gorsky, A. Ushenko   +5 more
semanticscholar   +1 more source

Polarization degree singularities

SPIE Proceedings, 2009
New type of vector singularities inherent in partially coherent combined beams is explored. There are the polarization degree singularities, such as U (unpolarized) and P (completely polarized) elements of a field. The fundamental properties of such singularities are derived for the general case of elliptical polarization basis using the notion ...
Peter V. Polyanskii, Christina V. Felde, Alex A. Chernyshov   +2 more
openaire   +1 more source

Formation of polarization singularity lattice through dual-phase modulation

Journal of Optics, 2020
In this paper, we demonstrate the generation of different singularity lattices consisting of only V-points or only C-points using a versatile method based on double phase modulation.
Praveen Kumar, S. Pal, N. Nishchal, P. Senthilkumaran   +3 more
semanticscholar   +1 more source

Bound-States-in-the-Continuum-Induced Directional Photoluminescence with Polarization Singularity in WS2 Monolayers.

Nano letters (Print)
Monolayer transition metal dichalcogenides are promising materials that not only are atomically thin but also have direct bandgaps, making them highly regarded in optics and optoelectronics.
Jihae Lee, M. Jeong, J. Jang, Joo-Suc Kim, J. Mun, Xiangxin Gong, Rouli Fang, Yuhui Yang, S.-H. Chae, Sejeong Kim, J. Rho   +10 more
semanticscholar   +1 more source