Search Results - "Gomes, A.S.L"
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Micro-structural information of porous materials by optical coherence tomography
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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2
Failures of adhesion: Non-invasive and three-dimensional images using two-photon microscopy
Published in Dental materials (2010)Get full text
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3
Characterization of efficient dual-wavelength (1050 + 800 nm) pumping scheme for thulium-doped fiber amplifiers
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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4
Transient gain behavior in 1050/1550-nm dual-wavelength pumped TDFAs
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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5
TDFA/Raman hybrid amplifiers covering the entire S-band pumped by a single laser
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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6
Dual-wavelength (1050 nm +1550 nm) pumped thulium-doped fiber amplifier characterization by optical frequency-domain reflectometry
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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7
Measurements of pKa of organic molecules using third-order nonlinear optics
Published in Chemical physics letters (01-11-2000)Get full text
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8
Optical coherence tomography in evaluation of Veneer's cementation layer
Published in Dental materials (2018)Get full text
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9
Curing cycle effect on complete dentures porosities: OCT evaluation
Published in Dental materials (2018)Get full text
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10
The implementation of portable air-cleaning technologies in healthcare settings – a scoping review
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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11
Rare earth doped PDMS elastomeric random lasers
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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12
Blue light emission in thulium doped silica-on-silicon waveguides
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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13
Er3+ doped waveguide amplifiers written with femtosecond laser in germanate glasses
Published in Optical materials (01-10-2011)Get full text
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Er 3+ doped waveguide amplifiers written with femtosecond laser in germanate glasses
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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15
Raman enhanced parametric amplifier based S–C band wavelength converter: Experiment and simulations
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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16
Dental fiber-reinforced composite analysis using optical coherence tomography
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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17
1.5μm Emission and infrared-to-visible frequency upconversion in Er+3/Yb+3-doped phosphoniobate glasses
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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18
Optimization of spectrally flat and broadband single-pump fiber optic parametric amplifiers
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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19
Investigation of picosecond optical nonlinearity in porphyrin metal complexes derivatives
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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20
Measurements of p Ka of organic molecules using third-order nonlinear optics
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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