Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Alejandro B. Aceves"'
Autor:
Vincent Couderc, Vladimir L. Kalashnikov, Fabio Mangini, Fabrizio Frezza, Alejandro B. Aceves, Alioune Niang, Mario Zitelli, Tigran Mansuryan, M. Ferraro, Stefan Wabnitz, Alessandro Tonello
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Scientific Reports
Archivio istituzionale della ricerca-Università di Brescia
DOAJ-Articles
Archivio della ricerca-Università di Roma La Sapienza
PubMed Central
Scientific Reports
Archivio istituzionale della ricerca-Università di Brescia
DOAJ-Articles
Archivio della ricerca-Università di Roma La Sapienza
PubMed Central
We demonstrate a new practical approach for generating multicolour spiral-shaped beams. It makes use of a standard silica optical fibre, combined with a tilted input laser beam. The resulting breaking of the fibre axial symmetry leads to the propagat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69f0fcd514cd02ec5b109c0257b24260
https://doaj.org/article/458d46492225425c9c66532266bb268f
https://doaj.org/article/458d46492225425c9c66532266bb268f
Autor:
R. Fona, Guy Millot, Stefan Wabnitz, Katarzyna Krupa, Badr Mohamed Ibrahim Shalaby, Vincent Couderc, Fabio Baronio, Alexis Labruyère, Alessandro Tonello, Alejandro B. Aceves
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
Scientific Reports
Scientific Reports
We experimentally demonstrate the spatial self-cleaning of a highly multimode optical beam, in the process of second-harmonic generation in a quadratic nonlinear potassium titanyl phosphate crystal. As the beam energy grows larger, the output beam fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f47ce36148af7d4adbdf8cb05c882ef
http://link.springer.com/article/10.1038/s41598-020-64080-7
http://link.springer.com/article/10.1038/s41598-020-64080-7
Autor:
Sergei K. Turitsyn, Andrey D. Pryamikov, Ljupco Hadzievski, Mikhail P. Fedoruk, Alejandro B. Aceves
Publikováno v:
Journal of the European Optical Society-Rapid Publications
Coherent vortex structures are fascinating physical objects that are widespread in nature: from large scale atmospheric phenomena, such as tornadoes and the Great Red Spot of Jupiter to microscopic size topological defects in quantum physics and opti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92283554ee570e238ab92833a31622bf
https://doi.org/10.1186/s41476-021-00168-5
https://doi.org/10.1186/s41476-021-00168-5
Autor:
Ross Parker, Alejandro B. Aceves
Publikováno v:
Physical Review A. 103
In the present work, we consider the existence and spectral stability of standing wave solutions to a model for light propagation in a twisted multi-core fiber with no gain or loss of energy. Numerical parameter continuation experiments demonstrate t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba96c166f4773bb06e598d05e42ed46b
https://doi.org/10.1103/physreva.103.053505
https://doi.org/10.1103/physreva.103.053505
Autor:
Fabio Mangini, Alioune Niang, Fabrizio Frezza, Vladimir L. Kalashnikov, M. Ferraro, Alessandro Tonello, Stefan Wabnitz, Vincent Couderc, Tigran Mansuryan, Alejandro B. Aceves, Mario Zitelli
Publikováno v:
Scopus-Elsevier
Conference on Lasers and Electro-Optics
Conference on Lasers and Electro-Optics
We observed the generation of a spiral-shaped intensity beams from optical fibers under suitable coupling conditions. In nonlinear regime, we observed rainbow-spiral emission thanks to the generation of supercontinuum in the fiber.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92cbf1c909613a3f4cd01ca773cd9f04
https://doi.org/10.1364/cleo_qels.2021.fth1j.5
https://doi.org/10.1364/cleo_qels.2021.fth1j.5
Autor:
Alejandro B. Aceves, A. Copeland
Publikováno v:
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials).
Recent work have shown light confinement can occur during propagation through a twisted coreless photonic crystal fiber (a chiral fiber). In the absence of a twist, the modal profile is assumed known from Bloch theory and assumed not to be confined.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0aafef892caaea7a3d1a7a10e4282694
https://doi.org/10.1109/metamaterials49557.2020.9284964
https://doi.org/10.1109/metamaterials49557.2020.9284964
Autor:
Ross Parker, Alejandro B. Aceves
In the present work, we consider the existence and spectral stability of multi-pulse solitary wave solutions to a nonlinear Schr\"odinger equation with both fourth and second order dispersion terms. We first give a criterion for the existence of a si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbeaecbcc9139d47365649b69a928e22
http://arxiv.org/abs/2009.01647
http://arxiv.org/abs/2009.01647
Autor:
Babatope O. Adebiyi, Abiodun M. Adeola, Ramsès Djidjou-Demasse, Yves J. Semegni, Peter J. Witbooi, Rita O. Abiodun, Kelechi Elizabeth Oladimeji, Gbenga J. Abiodun, Alejandro B. Aceves, Olusola Samuel Makinde, Kevin Y. Njabo, Kazeem Oare Okosun, Olanrewaju Oladimeji
Publikováno v:
The Open Public Health Journal, vol 13, iss 1
The Open Public Health Journal
The Open Public Health Journal, Bentham Science Publishers, 2020, 13 (1), pp.119-125. ⟨10.2174/1874944502013010119⟩
The Open Public Health Journal
The Open Public Health Journal, Bentham Science Publishers, 2020, 13 (1), pp.119-125. ⟨10.2174/1874944502013010119⟩
Background: Malaria remains a serious concern in most African countries, causing nearly one million deaths globally every year. This review aims to examine the extent and nature of the resurgence of malaria transmission in South Africa. Methods: Usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1642de6532efdf1a57a93efd31001463
https://escholarship.org/uc/item/3rg1c78k
https://escholarship.org/uc/item/3rg1c78k
Publikováno v:
OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF).
Inspired by work on fractional Quantum Mechanics and Levy path integrals, recently we have seen increased interest in extending this concept in optical settings. Here we present our first results in the spatio-temporal regime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f87d4c8fd1d4893b02a8221db84a3741
https://doi.org/10.1364/np.2020.npth3d.6
https://doi.org/10.1364/np.2020.npth3d.6
Publikováno v:
2019 Photonics North (PN).
We study the propagation of intense multi-frequency optical beams under the effect of Kerr nonlinearity. Soliton solutions with mixed topological charges were obtained numerically for certain frequency ratios in both resonant and non-resonant regimes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed9e70db8fe611bb8e0cf4b744fadb27
https://doi.org/10.1109/pn.2019.8819581
https://doi.org/10.1109/pn.2019.8819581