Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Ricardo E. Samad"'
Publikováno v:
2022 SBFoton International Optics and Photonics Conference (SBFoton IOPC).
Autor:
Sudeep Banerjee, Ricardo E. Samad, Alexandre Bonatto, Edison Puig Maldonado, Roger Pizzato Nunes, Nilson Dias Vieira
Publikováno v:
2021 SBFoton International Optics and Photonics Conference (SBFoton IOPC).
We review the fundamentals of electron beam generation in self-modulated laser wakefield acceleration (SM-LWFA) using laser pulses with peak powers on the TW and sub-TW scale. The results of several new particle-in-cell simulations for λ = 0.8 µm a
Autor:
Mauricio Moralles, Ricardo E. Samad, Edison Puig Maldonado, Sudeep Banerjee, Nilson Dias Vieira, A. Bonatto, Frederico A. Genezini, Roger Pizzato Nunes, Armando V. F. Zuffi
Publikováno v:
2021 SBFoton International Optics and Photonics Conference (SBFoton IOPC).
Electron beams generated by laser wakefield acceleration can induce a photoneutron reaction to convert 100Mo into 99Mo. Multi-pC, several-MeV electron beams, obtained from particle-in-cell simulations, could generate bremsstrahlung gamma photons with
Publikováno v:
2021 SBFoton International Optics and Photonics Conference (SBFoton IOPC).
This work reports the development of a modified Mach-Zehnder interferometer aimed at determining the density of gas targets and laser generated plasmas, in time and space. This interferometer will compose our laboratory implementations for laser wake
Publikováno v:
2021 SBFoton International Optics and Photonics Conference (SBFoton IOPC).
Ultrashort laser pulses interact with matter in unique, nonselective ways, due to electronic direct excitation in an ultrafast time scale. Additionally, these pulses can cover peak powers from kW to PW, allowing its use to induce from nonlinear optic
Publikováno v:
2021 SBFoton International Optics and Photonics Conference (SBFoton IOPC).
An analytical formulation of a multi-kilowatt ytterbium-doped double-cladding tandem-pumped fiber amplifier was developed and is reported in this paper. The model consists of a system including the laser rate, pumping and seed power equations. The mo
Autor:
Nilson D. Vieira Junior, Edson P. Maldonado, Bruno Britto Chiomento, Fabio B. D. Tabacow, Armando V. F. Zuffi, Ricardo E. Samad
Publikováno v:
2021 SBFoton International Optics and Photonics Conference (SBFoton IOPC).
This work reports the development and experimental implementation of a methodology for manufacturing submillimetric de Laval nozzles by ultrashort laser pulses micromachining by trepanning. The use of a ceramic substrate resulted in the fabrication o
Publikováno v:
2021 SBFoton International Optics and Photonics Conference (SBFoton IOPC).
An analytical formulation and modeling of an optical fiber Bragg gratings has been developed and is reported in this paper. Supported by the coupled-mode theory and considering that the mode fields of the unperturbed waveguide remain unchanged in the
Autor:
Nilson Dias Vieira, Ricardo E. Samad, Fabio B. D. Tabacow, Edison Puig Maldonado, Armando V. F. Zuffi
Publikováno v:
2021 SBFoton International Optics and Photonics Conference (SBFoton IOPC).
This work reports a theoretical and experimental study of supersonic gas jets to be used as targets in laser wakefield acceleration. A comparison between theoretical and experimental results ismade in order to estimate the results of a de Laval nozzl
Publikováno v:
2021 SBFoton International Optics and Photonics Conference (SBFoton IOPC).
An analytical investigation of the refractive index behavior of an ytterbium-doped optical fiber silica glass as a function of the core-clad temperature, upper-level population laser density, and pumping signal intensity is presented in this paper. F