Results 11 to 20 of about 3,249 (255)

Effect of Twisting Phases on the Polarization Dynamics of a Vector Optical Field

Photonics, 2022
The effect of twisting phases on the polarization dynamics of a vector vortex beam with a spatially variant state of polarization (SoP) is investigated theoretically and experimentally.
Quanbin Liu, Khian-Hooi Chew, Yingqi Huang, Caixia Liu, Xiaobo Hu, Yuhua Li, Rui-Pin Chen   +6 more
doaj   +1 more source

Structured air lasing of N2 +

Communications Physics, 2023
Air lasing is a simple and promising technique to efficiently produce coherent light in the atmosphere. Yet, its capability to obtain structured light like optical vortices or vector beams is still unexplored.
Jingsong Gao, Xiang Zhang, Yang Wang, Yiqi Fang, Qi Lu, Zheng Li, Yi Liu, Chengyin Wu, Qihuang Gong, Yunquan Liu, Hongbing Jiang   +10 more
doaj   +1 more source

Machine Learning-Based Classification of Vector Vortex Beams [PDF]

Physical Review Letters, 2020
Structured light is attracting significant attention for its diverse applications in both classical and quantum optics. The so-called vector vortex beams display peculiar properties in both contexts due to the non-trivial correlations between optical polarization and orbital angular momentum. Here we demonstrate a new, flexible experimental approach to
Giordani, Taira, Suprano, Alessia, Polino, Emanuele, Acanfora, Francesca, Innocenti, Luca, Ferraro, Alessandro, Paternostro, Mauro, Spagnolo, Nicolò, Sciarrino, Fabio   +8 more
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Physical Essence of Propagable Fractional‐Strength Optical Vortices in Free Space

Advanced Photonics Research, 2023
Fractional‐order vector vortex beams (VVBs) have recently been demonstrated as new carriers of fractional‐strength optical vortices. However, the inherent mechanism of the new vortex beams, formed by the combination of both unstable states, to propagate ...
Xiaoyu Weng, Yu Miao, Yu Chen, Qiang Song, Liwei Liu, Jun He, Changrui Liao, Yiping Wang, Xiumin Gao, Junle Qu, Songlin Zhuang   +10 more
doaj   +1 more source

Entangled vector vortex beams [PDF]

Physical Review A, 2016
Light beams having a vectorial field structure, or polarization, that varies over the transverse profile and a central optical singularity are called vector vortex (VV) beams and may exhibit specific properties such as focusing into "light needles" or rotation invariance.
D'Ambrosio, Vincenzo, Carvacho, Gonzalo, Graffitti, Francesco, Vitelli, Chiara, PICCIRILLO, BRUNO, MARRUCCI, LORENZO, Sciarrino, Fabio   +6 more
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Coherence-induced polarization effects in vector vortex beams [PDF]

Optics Letters, 2020
We demonstrate theoretically and experimentally coherence-induced polarization changes in higher-order vector vortex beams (VVBs) with polarization singularity. The prominent depolarization on decreasing the transverse correlation width in a focused partially coherent VVB provides a means to shape the intensity profile and degree of polarization (DOP ...
Stuti Joshi, Saba N. Khan, null Manisha, P. Senthilkumaran, Bhaskar Kanseri   +4 more
openaire   +3 more sources

Observation of the Rotational Doppler Effect With Structured Beams in Atomic Vapor

Frontiers in Physics, 2022
A vector beam with the spatial variation polarization has attracted keen interest and is progressively applied in quantum information, quantum communication, precision measurement, and so on.
Shuwei Qiu, Jinwen Wang, Xin Yang, Mingtao Cao, Shougang Zhang, Hong Gao, Fuli Li   +6 more
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Design of broadband terahertz vector and vortex beams: I. Review of materials and components

Light: Advanced Manufacturing, 2022
In this paper, we review the existing approaches for vortex and vector beam shaping and generation in the terahertz frequency range. The particular focus of this review is on the possibility of homogeneous topological charge formation in the ultra-wide ...
Nikolay V. Petrov, Bogdan Sokolenko, Maksim S. Kulya, Andrei Gorodetsky, Aleksey V. Chernykh   +4 more
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Generalized Jones Calculus for Vortex, Vector, and Vortex-Vector Beam Transformations

, 2021
The work defines the general form of the Jones vector and establishes the Jones matrix for polarizers, wave plates, Faraday rotators, Q-plates, and spiral phase plates. We establish the generalized Jones calculus for vortex, vector, and vortex-vector beam transformations. Systematic formalism presents the theoretical arrangements in the manipulation of
Kuan, Wen-Hsuan, Lin, Kuei-Huei, Wang, Chang-Wen, Hung, Ni-Hsuan   +3 more
openaire   +2 more sources

Topological phase structure of vector vortex beams [PDF]

Journal of the Optical Society of America A, 2014
The topological phase acquired by vector vortex optical beams is investigated. Under local unitary operations on their polarization and transverse degrees of freedom, the vector vortices can only acquire discrete geometric phase values, 0 or $π\,$, associated with closed paths belonging to different homotopy classes on the SO(3) manifold.
Souza, C. E. R., Huguenin, J. A. O., Khoury, A. Z.   +2 more
openaire   +3 more sources