Search Results - "Gomes, A.S.L"

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    Micro-structural information of porous materials by optical coherence tomography by Campello, S.L., dos Santos, W.P., Machado, V.F., Mota, C.C.B.O., Gomes, A.S.L., de Souza, R.E.

    Published in Microporous and mesoporous materials (01-11-2014)
    “…[Display omitted] •Use OCT images to measure microstructures and damages in porous media.•First quantitative application of OCT to evaluate microstructure in…”
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    Characterization of efficient dual-wavelength (1050 + 800 nm) pumping scheme for thulium-doped fiber amplifiers by Gomes, A.S.L., Carvalho, M.T., Sundheimer, M.L., Bastos-Filho, C.J.A., Martins-Filho, J.F., Costa e Silva, M.B., von der Weid, J.P., Margulis, W.

    Published in IEEE photonics technology letters (01-02-2003)
    “…We report on the characterization of a recently introduced dual-wavelength pumping scheme for thulium-doped fiber amplifiers using 800 and 1050 nm. Using a…”
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    Transient gain behavior in 1050/1550-nm dual-wavelength pumped TDFAs by Luthi, S.R., Carvalho, M.T., Gomes, A.S.L.

    Published in IEEE photonics technology letters (01-05-2005)
    “…We present an experimental study on transient events in 1050/1550-nm dual-wavelength pumped thulium-doped fiber amplifiers (TDFAs)-a promising candidate for…”
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    TDFA/Raman hybrid amplifiers covering the entire S-band pumped by a single laser by Luthi, S.R., Silva, M.B.Ce, Bastos-Filho, C.J.A., Martins-Filho, J.F., Gomes, A.S.L.

    Published in IEEE photonics technology letters (01-10-2005)
    “…Hybrid amplifier configurations are reported cascading one Raman and one or two Tm/sup 3+/-doped fiber stages, using a single pump at 1426 nm, allowing…”
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    Dual-wavelength (1050 nm +1550 nm) pumped thulium-doped fiber amplifier characterization by optical frequency-domain reflectometry by Martins-Filho, J.F., Bastos-Filho, C.J.A., Carvalho, M.T., Sundheimer, M.L., Gomes, A.S.L.

    Published in IEEE photonics technology letters (01-01-2003)
    “…We present experimental results of distributed gain measurements from a dual-pumped (1050 nm +1550 nm) thulium-doped fiber amplifier using optical…”
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    The implementation of portable air-cleaning technologies in healthcare settings – a scoping review by Alvarenga, M.O.P., Dias, J.M.M., Lima, B.J.L.A., Gomes, A.S.L., Monteiro, G.Q.M.

    Published in The Journal of hospital infection (01-02-2023)
    “…The COVID-19 pandemic revealed opportunities to improve prevention practices in healthcare settings, mainly related to the spread of airborne microbes (also…”
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    Rare earth doped PDMS elastomeric random lasers by Hlil, A.R., Lima, B.C., Thomas, J., Boisvert, J.-S., Iden, H., Garcia-Puente, Y., Maia, L.J.Q., Ledemi, Y., Messaddeq, Y., Gomes, A.S.L., Kashyap, R.

    Published in Optical materials (01-11-2019)
    “…We report a very stable elastomeric random laser (SERL) system composed of two stable materials: inorganic Nd: YAB nanoparticles and polydimethylsiloxane…”
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    Blue light emission in thulium doped silica-on-silicon waveguides by Bonar, J.R, Vermelho, M.V.D, McLaughlin, A.J, Marques, P.V.S, Aitchison, J.S, Martins-Filho, J.F, Bezerra, A.G, Gomes, A.S.L, de Araujo, Cid.B

    Published in Optics communications (01-09-1997)
    “…We report the experimental observation of up-conversion in an integrated silica-on-silicon waveguide. Blue light at 455 nm and 475 nm was observed. In addition…”
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    Er 3+ doped waveguide amplifiers written with femtosecond laser in germanate glasses by da Silva, Davinson Mariano, Kassab, Luciana Reyes Pires, Olivero, Massimo, Lemos, Thiago B.N., da Silva, Douglas V., Gomes, A.S.L.

    Published in Optical materials (2011)
    “…► Active waveguides in GeO 2–PbO–Ga 2O 3 glass doped with Er 3+ by direct fs laser writing. ► Permanent refractive index change was obtained and estimated to…”
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    Raman enhanced parametric amplifier based S–C band wavelength converter: Experiment and simulations by Freitas, João F.L., e Silva, M.B. Costa, Lüthi, S.R., Gomes, A.S.L.

    Published in Optics communications (15-11-2005)
    “…We report a theoretical and experimental characterization of a Raman enhanced fiber based parametric amplifier, extending prior work. A 10dB gain enhancement…”
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    Dental fiber-reinforced composite analysis using optical coherence tomography by Kyotoku, B.B.C., Gomes, A.S.L.

    Published in Optics communications (15-11-2007)
    “…An optical coherence tomography (OCT) system with 6μm spatial resolution was employed to image the sites of fracture initiation and slow crack propagation in a…”
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    1.5μm Emission and infrared-to-visible frequency upconversion in Er+3/Yb+3-doped phosphoniobate glasses by Barbosa, A.J., Dias Filho, F.A., Messaddeq, Y., Ribeiro, S.J.L., Gonçalves, R.R., Lüthi, S.R., Gomes, A.S.L.

    Published in Journal of non-crystalline solids (15-09-2006)
    “…Sodium phosphoniobate glasses with the composition (mol%) 75NaPO3–25Nb2O5 and containing 2mol% Yb3+ and x mol% Er3+ (0.01⩽x⩽2) were prepared using the…”
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    Optimization of spectrally flat and broadband single-pump fiber optic parametric amplifiers by Floridia, Claudio, Sundheimer, M.L., Menezes, L.de S., Gomes, A.S.L.

    Published in Optics communications (01-08-2003)
    “…Using well-known theory for fiber optical parametric amplifiers in the no-depletion approximation, a simple condition relating the second- and fourth-order…”
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    Investigation of picosecond optical nonlinearity in porphyrin metal complexes derivatives by Bezerra, A.G., Borissevitch, I.E., de Araujo, R.E., Gomes, A.S.L., de Araújo, Cid B.

    Published in Chemical physics letters (03-03-2000)
    “…Porphyrin metal complex derivatives were experimentally studied using the Z-scan technique and the optical Kerr gate method with picosecond pulses at 532 nm…”
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    Measurements of p Ka of organic molecules using third-order nonlinear optics by de Araujo, R.E, Gomes, A.S.L, de Araújo, Cid B

    Published in Chemical physics letters (2000)
    “…We report the use of the Z-scan method, which is a nonlinear optical technique, as a general method to determine a chemical parameter, the p K a, which…”
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