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pro vyhledávání: '"Araujo R"'
A triangular optical cavity can be used to distinguish between two beams with the same intensity profile but different wavefronts. This is what we show in this paper, both theoretically and experimentally, in the case of beams with a doughnut-like in
Externí odkaz:
http://arxiv.org/abs/2410.14491
Publikováno v:
Eur. Phys. J. C 84, 1034 (2024)
In this paper, we study the one-loop effective potential of a derivative four-fermion model. As a result, an exact bumblebee-like potential is radiatively generated. Afterwards, we generalize our study for a finite temperature case and explicitly dem
Externí odkaz:
http://arxiv.org/abs/2406.12987
Autor:
Rodrigues, L. M., Fagundes, L. Marques, Salles, D. C., Santos, G. H. dos, Kondo, J. M., Khoury, A. Z., Ribeiro, P. H. Souto, de Araújo, R. Medeiros
We experimentally demonstrate resonance of first-order vector vortex beams (VVB) with a triangular optical cavity. We also show that, due to their symmetry properties, the so-called radial and azimuthal VVBs do not resonate at the same cavity length,
Externí odkaz:
http://arxiv.org/abs/2310.15391
Blood vessel segmentation is one of the most studied topics in computer vision, due to its relevance in daily clinical practice. Despite the evolution the field has been facing, especially after the dawn of deep learning, important challenges are sti
Externí odkaz:
http://arxiv.org/abs/2107.14531
Publikováno v:
In Computers in Human Behavior March 2024 152
Autor:
Santos, G. H. dos, Salles, D. C., Damaceno, M. G., de Menezes, B. Teles, Corso, C., Martinelli, M., Ribeiro, P. H. Souto, de araújo, R. Medeiros
Publikováno v:
Phys. Rev. Applied 16, 034008 (2021)
We demonstrate that a triangular cavity can operate as an efficient discriminator for Hermite-Gaussian optical modes. The process is applied to distinct fields produced by a Spatial Light Modulator, decomposing the generated paraxial field onto a bas
Externí odkaz:
http://arxiv.org/abs/2104.04635
Autor:
de Oliveira, A. G., da Silva, N. Rubiano, de Araújo, R. Medeiros, Ribeiro, P. H. Souto, Walborn, S. P.
Publikováno v:
Phys. Rev. Applied 14, 024048 (2020)
We present a quantum optics approach for describing stimulated parametric down conversion in the two type-I crystal "sandwich" configuration, which allows for parametric interaction of vector vortex beams. We analyze the conditions for which phase co
Externí odkaz:
http://arxiv.org/abs/2005.01855
Autor:
Ribeiro, P. H. Souto, Häffner, T., Zanin, G. L., da Silva, N. Rubiano, de Araújo, R. Medeiros, Silva, W. C. S., de Assis, R. J., Céleri, L. C., Forbes, A.
Publikováno v:
Phys. Rev. A 101, 052113 (2020)
Optical modes possessing orbital angular momentum constitute a very useful platform for experimental studies on the quantum limits of Thermodynamics. Here, we present experimental results for entangled photon pairs subjected to thin turbulence simula
Externí odkaz:
http://arxiv.org/abs/1912.06447
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