Results 11 to 20 of about 1,828,977 (180)

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
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Terahertz vortex beam generation by infrared vector beam rectification [PDF]

Journal of the Optical Society of America B, 2018
We report on the conversion of an infrared vector beam into terahertz vortex beams using a ⟨110⟩-cut ZnTe cubic crystal. First, we provide a theoretical analysis demonstrating how an infrared vector beam with the azimuthal order l can be transformed into a terahertz beam endowed with an orbital angular moment content that consists of optical vortices ...
Dhaybi, Ali, Degert, Jerome, Brasselet, Etienne, Abraham, Emmanuel, Freysz, Eric   +4 more
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Inverse Energy Flux in Tight Focusing of Vector Vortex Beam

Photonics, 2023
In this paper, we focus on the study of the negative energy flow in the tight focusing of a radially polarized vortex beam. We know that, because of the coupling of the polarization state and the vortex charge, the on-axis energy flow in the focal region
Ruixiang Chen, Tiegen Song, Yuee Luo, Hehe Li, Xinzhong Li   +4 more
doaj   +2 more sources

Transmission of vector vortex beams in dispersive media [PDF]

Advanced Photonics, 2020
Scattering phenomena affect light propagation through any kind of medium from free space to biological tissues. Finding appropriate strategies to increase the robustness to scattering is the common requirement in developing both communication protocols and imaging systems. Recently, structured light has attracted attention due to its seeming scattering
Ilaria Gianani, Alessia Suprano, Taira Giordani, Nicolò Spagnolo, Fabio Sciarrino, Dimitris Gorpas, Vasilis Ntziachristos, Katja Pinker, Netanel Biton, Judy Kupferman, Shlomi Arnon   +10 more
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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