Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Khoury, Antonio"'
Autor:
Tandeitnik, Daniel, Kremer, Oscar, Almeida, Felipe, Zielinska, Joanna, Khoury, Antonio Zelaquett, Guerreiro, Thiago
The superposition of frequency-shifted Laguerre-Gauss modes can produce a rotating saddle-like intensity profile. When spinning fast enough, the optical forces produced by this structured light saddle generate a dynamically stable equilibrium point c
Externí odkaz:
http://arxiv.org/abs/2407.12668
Autor:
da Motta, Mateus Rattes Lima, Alves, Gabriel Bié, Khoury, Antonio Zelaquett, Vianna, Sandra Sampaio
We explore a degenerate four-wave mixing process induced by transversely structured light beams in a rubidium vapor cell. In particular, we consider the nonlinear interaction driven by optical modes contained in the orbital angular momentum Poincar\'
Externí odkaz:
http://arxiv.org/abs/2308.11415
Autor:
Luttmann, Martin, Vimal, Mekha, Guer, Matthieu, Hergott, Jean-François, Khoury, Antonio Z., Hernández-García, Carlos, Pisanty, Emilio, Ruchon, Thierry
Symmetries and conservation laws of energy, linear momentum and angular momentum play a central role in physics, in particular in nonlinear optics. Recently, light fields with non trivial topology, such as polarization M\"obius strips or torus-knot b
Externí odkaz:
http://arxiv.org/abs/2209.00454
Autor:
Keller, Arne, Khoury, Antonio Zelaquett, Fabre, Nicolas, Amanti, Maria Inès, Baboux, Florent, Ducci, Sara, Milman, Pérola
Stimulated emission tomography is a powerful and successful technique to both improve the resolution and experimentally simplify the task of determining the modal properties of biphotons. In the present manuscript we provide a theoretical description
Externí odkaz:
http://arxiv.org/abs/2205.09338
Autor:
Maia, Mayanne R., Jonathan, Daniel, Oliveira, Thiago R., Khoury, Antonio Z., Tasca, Daniel S.
Publikováno v:
Opt. Express 30, 27180-27195 (2022)
Interference is the mechanism through which waves can be structured into the most fascinating patterns. While for sensing, imaging, trapping, or in fundamental investigations, structured waves play nowadays an important role and are becoming subject
Externí odkaz:
http://arxiv.org/abs/2204.00915
Publikováno v:
Phys. Rev. A 102, 033708 (2020)
We develop the formal approach to the angular spectrum transfer in parametric down-conversion that allows pumping with a structured beam. The scheme is based on an entangled photon source pumped by a laser beam structured with a vector-vortex polariz
Externí odkaz:
http://arxiv.org/abs/2007.03883
Autor:
de Oliveira, André G., Arruda, Marcelo F. Z., Soares, Willamys C., Walborn, Stephen P., Khoury, Antonio Z., Kanaan, Antonio, Ribeiro, Paulo H. Souto, de Araújo, Renné Medeiros
We report on an experiment that investigates the spatial mode conversion in the process of parametric down-conversion seeded by a light beam in a superposition of orbital angular momentum modes. This process is interpreted in terms of a geometric rep
Externí odkaz:
http://arxiv.org/abs/1808.10398
Publikováno v:
Phys. Rev. A 96, 053856 (2017)
We investigate the non linear mixing of orbital angular momentum in type II second harmonic generation with arbitrary topological charges imprinted on two orthogonally polarized beams. Starting from the basic nonlinear equations for the interacting f
Externí odkaz:
http://arxiv.org/abs/1707.06358
Autor:
Pinheiro da Silva Braian, Buono Wagner T., Pereira Leonardo J., Tasca Daniel S., Dechoum Kaled, Khoury Antonio Z.
Publikováno v:
Nanophotonics, Vol 11, Iss 4, Pp 771-778 (2021)
We demonstrate the spin to orbital angular momentum transfer in frequency upconversion with structured light beams. A vector vortex is coupled to a circularly polarized Gaussian beam in noncollinear second harmonic generation under type-II phase matc
Externí odkaz:
https://doaj.org/article/7a90e620664742a48aa1b9a03a182612
Autor:
Guer Matthieu, Luttmann Martin, Vimal Mekha, Hergott Jean-François, Zelaquett Khoury Antonio, Hernández-García Carlos, Pisanty Emilio, Ruchon Thierry
Publikováno v:
EPJ Web of Conferences, Vol 287, p 11005 (2023)
Exotic light fields combining non-trivial spin and angular momentum may not be eigenstates of either the spin or orbital angular momenta operators. For these fields, it is relevant to define a Generalized Angular Momentum operator of which they are e
Externí odkaz:
https://doaj.org/article/3f750e58b080440e82258a564ab216fb