Prof. Rui Manuel Almeida Profile

Prof. Rui Manuel Almeida

Professor at Instituto Superior Técnico

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Author

Publications (9)

Proceedings Article | 9 July 2004 Paper

Rare-earth-doped Fabry-Perot microcavities by sol-gel processing

Sabine Portal, Rui Almeida

Proceedings Volume 5360, (2004) https://doi.org/10.1117/12.528527

KEYWORDS: Optical microcavities, Erbium, Mirrors, Ions, Ytterbium, Fabry–Perot interferometers, Silica, Refractive index, Sol-gels, Luminescence

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Proceedings Article | 17 June 2003 Paper

Erbium/ytterbium-activated silica-titania planar and channel waveguides prepared by rf-sputtering

Alessandro Chiasera, Maurizio Montagna, Cristiana Tosello, Rogeria Goncalves, Andrea Chiappini, Maurizio Ferrari, Luca Zampedri, Stefano Pelli, Giancarlo Righini, Andre Monteil, Vittorio Foglietti, Antonio Minotti, Rui Almeida, A. Marques, V. Soares

Proceedings Volume 4990, (2003) https://doi.org/10.1117/12.474774

KEYWORDS: Waveguides, Erbium, Ions, Raman spectroscopy, Luminescence, Ytterbium, Planar waveguides, Silica, Spectroscopy, Energy transfer

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Proceedings Article | 25 April 2002 Paper

Sol-gel preparation of one-dimensional photonic bandgap structures

Rui Almeida, Zhongchun Wang

Proceedings Volume 4655, (2002) https://doi.org/10.1117/12.463898

KEYWORDS: Silicon, Optical microcavities, Sol-gels, Reflectivity, Crystals, Polarization, Refractive index, Silica, Annealing, Micro raman spectroscopy

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Proceedings Article | 2 May 2000 Paper

Sulfide glass optical waveguides prepared by sol-gel processing

Rui Almeida, J. Xu

Proceedings Volume 3943, (2000) https://doi.org/10.1117/12.384332

KEYWORDS: Glasses, Oxides, Germanium, Waveguides, Sol-gels, Sodium, Silicon films, Planar waveguides, Silica, Silicon

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Proceedings Article | 2 October 1997 Paper

Optical loss mechanisms in nanocomposite sol-gel planar waveguides

Rui Almeida, Paulo Morais, H. Vasconcelos

Proceedings Volume 3136, (1997) https://doi.org/10.1117/12.284127

KEYWORDS: Scattering, Rayleigh scattering, Sol-gels, Waveguides, Crystals, Particles, Light scattering, Planar waveguides, Refractive index, Nanocomposites

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Proceedings Article | 29 July 1997 Paper

Sol-gel technologies in thin film fabrication for integrated optics lasers and amplifiers

Rui Almeida, H. Vasconcelos

Proceedings Volume 10290, 1029009 (1997) https://doi.org/10.1117/12.279836

KEYWORDS: Sol-gels, Thin films, Integrated optics, Laser optics, Optical amplifiers, Information operations, Neodymium, Erbium, Switching, Planar waveguides

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Proceedings Article | 13 October 1994 Paper

Relationship between infrared absorption and porosity in silica-based sol-gel films

Rui Almeida, H. Vasconcelos, Laura Ilharco

Proceedings Volume 2288, (1994) https://doi.org/10.1117/12.189004

KEYWORDS: Silica, Infrared radiation, Refractive index, Sol-gels, Absorption, Heat treatments, Annealing, Silicon, Ellipsometry, Silicon films

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Proceedings Article | 7 December 1992 Paper

Influence of processing parameters on the thickness of sol-gel silica films

M. Matos, Alvaro Carvalho, Rui Almeida, Laura Ilharco

Proceedings Volume 1758, (1992) https://doi.org/10.1117/12.132002

KEYWORDS: Sol-gels, Silica, Bioalcohols, Semiconducting wafers, Silicon, Wafer-level optics, Silicon films, Polymer thin films, Polymers, Integrated optics

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Proceedings Article | 1 November 1990 Paper

Vibrational spectra and structure of silica gel films spun on c-Si substrates

Rui Almeida, Carlo Pantano

Proceedings Volume 1328, (1990) https://doi.org/10.1117/12.22571

KEYWORDS: Silica, Oxides, Silicon, Semiconducting wafers, FT-IR spectroscopy, Reflectivity, Silicon films, Sol-gels, Oxygen, Crystals

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Showing 5 of 9 publications

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