Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Bruno D. Tibúrcio"'
Autor:
Miguel Catela, Dawei Liang, Joana Almeida, Hugo Costa, Dário Garcia, Bruno D. Tibúrcio, Emmanuel Guillot, Cláudia R. Vistas
Publikováno v:
Photonics, Vol 10, Iss 9, p 1047 (2023)
Conventional solar-pumped lasers rely on expensive and highly accurate solar tracking systems, which present a significant economic barrier to both solar laser research and practical applications. To address this challenge, an end-side-pumped four-ro
Externí odkaz:
https://doaj.org/article/022125ccd9f94f91a12b26235b4e1a0d
Autor:
Cláudia R. Vistas, Dawei Liang, Hugo Costa, Miguel Catela, Dário Garcia, Bruno D. Tibúrcio, Joana Almeida
Publikováno v:
Energies, Vol 16, Iss 13, p 5143 (2023)
A compact side-pumped solar laser design using a Ce:Nd:YAG laser medium is here proposed to improve the TEM00-mode solar laser output performance, more specifically the beam brightness. The solar laser performance of the Ce:Nd:YAG laser head was nume
Externí odkaz:
https://doaj.org/article/4b39f5a2abca49f2b9b5213734ca4111
Autor:
Bruno D. Tibúrcio, Dawei Liang, Joana Almeida, Dário Garcia, Miguel Catela, Hugo Costa, Cláudia R. Vistas
Publikováno v:
Energies, Vol 16, Iss 12, p 4815 (2023)
Significant numerical improvements in Fresnel lens Nd:YAG solar laser collection efficiency, laser quality factors and tracking error compensation capacity by two Fresnel lenses as primary solar concentrators are reported here. A Nd:YAG four-rod side
Externí odkaz:
https://doaj.org/article/7a85bb11f64e41f3a5ada81855e69e17
Autor:
Hugo Costa, Dawei Liang, Joana Almeida, Miguel Catela, Dário Garcia, Bruno D. Tibúrcio, Cláudia R. Vistas
Publikováno v:
Photonics, Vol 10, Iss 6, p 620 (2023)
Low-cost, lightweight, and easily available Fresnel lenses are a more alluring choice for solar laser power production, when compared to the costly and complex heliostat-parabolic mirror systems. Therefore, a seven-rod solar laser head was designed a
Externí odkaz:
https://doaj.org/article/eec9f2788d494c3596aca1c2082f3de9
Autor:
Hugo Costa, Dawei Liang, Joana Almeida, Miguel Catela, Dário Garcia, Bruno D. Tibúrcio, Cláudia R. Vistas
Publikováno v:
Energies, Vol 15, Iss 23, p 9140 (2022)
A seven-rod solar laser head was conceptualized and numerically studied to improve the tracking error compensation capacity and power stability in end-side-pumping schemes. It was composed of a first-stage heliostat–parabolic mirror system, a secon
Externí odkaz:
https://doaj.org/article/a3515f044f3e4be38c2e8d6ecd5bdcf8
Autor:
Miguel Catela, Dawei Liang, Cláudia R. Vistas, Dário Garcia, Hugo Costa, Bruno D. Tibúrcio, Joana Almeida
Publikováno v:
Micromachines, Vol 13, Iss 10, p 1670 (2022)
We report a significant numerical improvement in multi-rod laser efficiency, with an enhanced solar tracking error compensation capacity for a heliostat-parabolic system. The solar laser head was composed of a fused silica conical lens and a single c
Externí odkaz:
https://doaj.org/article/2b21ed4122c54ee796414e98a8377e8f
Autor:
Dário Garcia, Dawei Liang, Cláudia R. Vistas, Hugo Costa, Miguel Catela, Bruno D. Tibúrcio, Joana Almeida
Publikováno v:
Energies, Vol 15, Iss 14, p 5292 (2022)
The efficiency potential of a small-size solar-pumped laser is studied here. The solar laser head was composed of a fused silica aspheric lens and a conical pump cavity, which coupled and redistributed the concentrated solar radiation from the focal
Externí odkaz:
https://doaj.org/article/bf39fb75c3c14adeb4435d21857646e6
Autor:
Cláudia R. Vistas, Dawei Liang, Dário Garcia, Miguel Catela, Bruno D. Tibúrcio, Hugo Costa, Emmanuel Guillot, Joana Almeida
Publikováno v:
Energies, Vol 15, Iss 10, p 3577 (2022)
The Ce:Nd:YAG is a recent active medium in solar-pumped lasers with great potential. This study focuses on the influence of two secondary concentrators: a fused silica aspherical lens and a rectangular fused silica light guide; and consequent pump li
Externí odkaz:
https://doaj.org/article/a618e0bd10784ace8bdf6bbcc6a06f9f
Autor:
Joana Almeida, Dawei Liang, Dário Garcia, Bruno D. Tibúrcio, Hugo Costa, Miguel Catela, Emmanuel Guillot, Cláudia R. Vistas
Publikováno v:
Energies, Vol 15, Iss 11, p 3998 (2022)
The solar laser power scaling potential of a side-pumped Ce:Nd:YAG solar laser through a rectangular fused silica light guide was investigated by using a 2 m diameter parabolic concentrator. The laser head was formed by the light guide and a V-shaped
Externí odkaz:
https://doaj.org/article/b0c8352ffc704f40932582cddda1d820
Autor:
Dário Garcia, Dawei Liang, Joana Almeida, Bruno D. Tibúrcio, Hugo Costa, Miguel Catela, Cláudia R. Vistas
Publikováno v:
Energies, Vol 15, Iss 2, p 668 (2022)
A novel three-dimensional elliptical-shaped Fresnel lens (ESFL) analytical model is presented to evaluate and maximize the solar energy concentration of Fresnel-lens-based solar concentrators. AutoCAD, Zemax and Ansys software were used for the ESFL
Externí odkaz:
https://doaj.org/article/3460d00b6b7a47aa89c01ca73d1fe51c