Dr. Luiz Carlos Barbosa Profile

Dr. Luiz Carlos Barbosa

Researcher

SPIE Involvement:

Author

Publications (71)

Proceedings Article | 10 September 2015 Paper

Light dispersion in space

L. Barbosa

Proceedings Volume 9570, 95700B (2015) https://doi.org/10.1117/12.2186711

KEYWORDS: Galactic astronomy, Dispersion, Hubble Space Telescope, Stars, Optical fibers, Refractive index, Light, Microwave radiation, Mechanics, Dielectrics

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Proceedings Article | 3 September 2015 Paper

Optical sensor for detection of the level of liquids or liquefied gases in tanks without the use of moving parts

Cicero Omegna, Jonas Fontes Garcia, Roddy Ramos-Gonzáles, Luiz Barbosa

Proceedings Volume 9579, 95790W (2015) https://doi.org/10.1117/12.2187225

KEYWORDS: Liquids, Sensors, Bioalcohols, Prisms, Refractive index, Photodetectors, Gases, Light sources, Signal detection, Light

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Proceedings Article | 3 September 2015 Paper

Chemical resistance of optical plastics and resin for level detectors

Cicero Omegna, Jonas Fontes Garcia, Roddy Ramos-Gonzáles, Luiz Barbosa

Proceedings Volume 9579, 95790X (2015) https://doi.org/10.1117/12.2187232

KEYWORDS: Bioalcohols, Sensors, Biodiesel, Resistance, Optics manufacturing, Transparency, Chemical reactions, Optical properties, Polymers, Manufacturing

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Proceedings Article | 7 March 2014 Paper

Optical characterization, luminescence properties of Er3+ and Er3+/Yb3+ co-doped tellurite glasses for broadband amplification

Seshadri Meruva, Barbosa Luiz Carlos, Ferencz Junior Julio Alberto Peres

Proceedings Volume 8961, 896132 (2014) https://doi.org/10.1117/12.2037000

KEYWORDS: Glasses, Ions, Luminescence, Absorption, Near infrared, Erbium, Optical amplifiers, Energy transfer, Refractive index, Upconversion

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Proceedings Article | 7 March 2014 Paper

Spectroscopic properties of Ho3+, Tm3+, and Ho3+/Tm3+ doped tellurite glasses for fiber laser applications

M. Seshadri, J. A. Ferencz Junior, Y. Ratnakaram, L. Barbosa

Proceedings Volume 8961, 896139 (2014) https://doi.org/10.1117/12.2036876

KEYWORDS: Glasses, Ions, Absorption, Energy transfer, Spectroscopy, Fiber lasers, Luminescence, Thulium, Near infrared, Semiconductor lasers

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Proceedings Article | 26 February 2013 Paper

Sm3+ effects in the Tm3+ doped tellurite glass for S-band amplification

Marcos Belançon, Julio Ferenz, Enver Chillcce, Luis Carlos Barbosa

Proceedings Volume 8601, 86012D (2013) https://doi.org/10.1117/12.2002897

KEYWORDS: Thulium, Samarium, Luminescence, Absorption, Near infrared, Glasses, S band, Ions, Infrared radiation, Ocean optics

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Proceedings Article | 26 February 2013 Paper

Spectroscopic investigation of the glass system TeO2-WO3-Na2O-Nb2O5 for mid-infrared amplifiers

Marcos Belançon, Luis Carlos Barbosa

Proceedings Volume 8601, 86012F (2013) https://doi.org/10.1117/12.2003021

KEYWORDS: Glasses, Luminescence, Optical amplifiers, Bismuth, Ytterbium, Absorption, Spectroscopy, Fiber amplifiers, Near infrared, Mid-IR

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Proceedings Article | 20 March 2012 Paper

Bend loss insensitive all-solid optical fiber

Luis Avila, Enver Chillcce, Luiz Barbosa

Proceedings Volume 8257, 82571B (2012) https://doi.org/10.1117/12.909006

KEYWORDS: Optical fibers, Signal attenuation, Silica, Glasses, Dispersion, Supercontinuum generation, Fiber to the x, Fabrication, Nonlinear optics, Single mode fibers

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Proceedings Article | 20 March 2012 Paper

Er[sup]3+[/sup]-doped micro-structured tellurite fiber: laser generation and optical gain

E. Chillcce, R. Narro-García, J. Menezes, E. Rodriguez, D. Marconi, H. Fragnito, L. Barbosa

Proceedings Volume 8257, 82570B (2012) https://doi.org/10.1117/12.909026

KEYWORDS: Fiber lasers, Laser optics, Structured optical fibers, Glasses, Signal attenuation, Single mode fibers, Fabrication, Optical amplifiers, Waveguides, Wavelength division multiplexing

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Proceedings Article | 16 February 2012 Paper

Influence of the growing parameters on the size distribution of PbTe nanoparticles produced by laser ablation under inert gas atmosphere

D. Almeida, E. Rodriguez, S. Agouram, R. Moreira, C. Cesar, E. Jimenez, L. Barbosa

Proceedings Volume 8245, 82450K (2012) https://doi.org/10.1117/12.909295

KEYWORDS: Nanoparticles, Argon, Transmission electron microscopy, Laser ablation, Pulsed laser deposition, Q switched lasers, Nd:YAG lasers, Quantum dots, Copper, Electron microscopes

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Proceedings Article | 8 September 2011 Paper

Optical and physical properties of Er3+-Yb3+ co-doped tellurite fibers

R. Narro-García, E. Chillcce, A. Miranda, J. Giehl, L. Barbosa, E. Rodriguez, M. Arronte

Proceedings Volume 8120, 812005 (2011) https://doi.org/10.1117/12.892786

KEYWORDS: Optical fibers, Glasses, Signal attenuation, Refractive index, Luminescence, Absorption, Ions, Fabrication, Optical properties, Erbium

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Proceedings Article | 8 September 2011 Paper

Micro-size tapered silica fibers for sensing applications

Roddy E. Ramos Gonzáles, Enver Chillcce, Luiz Barbosa

Proceedings Volume 8120, 81200K (2011) https://doi.org/10.1117/12.892784

KEYWORDS: Optical fibers, Waveguides, Geometrical optics, Transmittance, Liquids, Sensors, Single mode fibers, Photonic crystal fibers, Lead, Nanowires

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Proceedings Article | 26 July 2011 Paper

Supercontinuum generation by using photonic crystal fibres made from borosilicate glasses

E. F. Chillcce, R. E. Ramos-Gonzales, Flavio Cruz, C. M. B. Cordeiro, L. C. Barbosa

Proceedings Volume 8001, 80013S (2011) https://doi.org/10.1117/12.891987

KEYWORDS: Borosilicate glass, Glasses, Solids, Scanning electron microscopy, Supercontinuum generation, Photonic crystal fibers, Signal attenuation, Finite element methods, Refractive index, Dispersion

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Proceedings Article | 26 July 2011 Paper

VIS-NIR bend loss sensitive photonic crystal fibers

E. F. Chillcce, T. Allan, C. M. B. Cordeiro, L. C. Barbosa

Proceedings Volume 8001, 80014K (2011) https://doi.org/10.1117/12.891981

KEYWORDS: Optical fibers, Photonic crystal fibers, Capillaries, Sensors, Optical filters, Single mode fibers, Silica, Spectrum analysis, Light sources, Transmittance

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Proceedings Article | 18 August 2010 Paper

Supercontinuum generation using small core photonic crystal fibers

E. Chillcce, R. Ramos-Gonzales, C. M. Cordeiro, C. de Brito Cruz, H. Hernández-Figueroa, L. Barbosa

Proceedings Volume 7781, 77810L (2010) https://doi.org/10.1117/12.859258

KEYWORDS: Supercontinuum generation, Photonic crystal fibers, Dispersion, Visible radiation, Sapphire lasers, Scanning electron microscopy, Finite element methods, Chromium, Ultraviolet radiation, Silica

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Proceedings Article | 18 August 2010 Paper

Broadband emission spectra of a PbS-core collodial quantum dots on the core surface of a silica microstructured fiber

Enver Chillcce, Roddy Gonzales, Cristiano M. Cordeiro, Carlos Brito Cruz, Hugo E. Figueroa, R. Braga, Luiz Barbosa

Proceedings Volume 7781, 778102 (2010) https://doi.org/10.1117/12.855829

KEYWORDS: Micro optical fluidics, Lead, Silica, Luminescence, Absorption, Quantum dots, Signal attenuation, Semiconductor lasers, Infrared cameras, Optical amplifiers

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Proceedings Article | 28 April 2010 Paper

Luminescence of PbS quantum dots on a silica microstructured fiber

Luis Barbosa, Enver Chillcce, Cristiano Cordeiro

Proceedings Volume 7714, 771408 (2010) https://doi.org/10.1117/12.837489

KEYWORDS: Lead, Silica, Luminescence, Quantum dots, Semiconductor lasers, Optical amplifiers, Absorption, Optical filters, Liquids, Light scattering

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Proceedings Article | 4 December 2009 Paper

Glass doped with semiconductor nanoparticles for optical devices

E. Rodriguez, L. Ponce, M. Arronte, E. de Posada, G. Kellerman, C. César, L. Barbosa

Proceedings Volume 7499, 749917 (2009) https://doi.org/10.1117/12.849064

KEYWORDS: Nanoparticles, Glasses, Multilayers, Plasma enhanced chemical vapor deposition, Absorption, Semiconductors, Time multiplexed optical shutter, Optical components, Scattering, Silica

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Proceedings Article | 2 September 2009 Paper

Thiol capped colloidal CdTe quantum dots synthesized using laser ablation

D. Almeida, E. Rodriguez, R. Moreira, S. Agouram, L. Barbosa, E. Jimenez, C. Cesar

Proceedings Volume 7393, 739304 (2009) https://doi.org/10.1117/12.826211

KEYWORDS: Laser ablation, Quantum dots, Nanoparticles, Luminescence, Absorption, Bioalcohols, Molecules, Particles, Semiconductors, Liquids

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Proceedings Article | 10 July 2009 Paper

Laser ablation synthesis route of CdTe colloidal quantum dots for biological applications

D. Almeida, E. Rodriguez, R. Moreira, S. Agouram, L. Barbosa, E. Jimenez, C. Cesar

Proceedings Volume 7371, 73710F (2009) https://doi.org/10.1117/12.831723

KEYWORDS: Nanoparticles, Quantum dots, Molecules, Laser ablation, Luminescence, Bioalcohols, Absorption, Particles, Silica, Liquids

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Proceedings Article | 4 September 2008 Paper

Simple silanization routes of CdSe and CdTe nanocrystals for biological applications

Diogo Almeida, Wagner Faustino, Gilberto Jacob, André de Thomaz, Luiz Barbosa, Oswaldo Alves, Patricia Farias, Beate Santos, Adriana Fontes, Suzete Gomes, Denise Feder, Italo Mazali, Carlos Cesar

Proceedings Volume 7030, 70300I (2008) https://doi.org/10.1117/12.795436

KEYWORDS: Silica, Quantum dots, Nanocrystals, Bioalcohols, Confocal microscopy, Cadmium, Selenium, Sodium, Absorption, Natural surfaces

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Proceedings Article | 29 August 2008 Paper

Study of optically trapped living Trypanosoma cruzi/Trypanosoma rangeli - Rhodnius prolixus interactions by real time confocal images using CdSe quantum dots

A. de Thomaz, D. Almeida, W. Faustino, G. Jacob, A. Fontes, L. Barbosa, C. Cesar, C. Stahl, J. Santos-Mallet, S. Gomes, D. Feder

Proceedings Volume 7038, 703810 (2008) https://doi.org/10.1117/12.795370

KEYWORDS: Confocal microscopy, Optical tweezers, Quantum dots, Intestine, Luminescence, Blood, Microscopes, Microorganisms, Objectives, Video

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Proceedings Article | 22 February 2008 Paper

Quantum confinement effects on the phonons of PbTe quantum dots in tellurite glasses

G. Jacob, D. Almeida, W. Faustino, E. Rodrigues, C. Brito, L. Barbosa, C. Cesar

Proceedings Volume 6892, 689207 (2008) https://doi.org/10.1117/12.761680

KEYWORDS: Quantum dots, Phonons, Glasses, Raman spectroscopy, Acoustics, Lead, Absorption, Borosilicate glass, Oxides, Tellurium

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Proceedings Article | 14 February 2008 Paper

PbTe quantum dots grown by femtosecond laser ablation

E. Rodriguez, D. Biggemann, L. Moya, W. Pippo, R. Moreira, D. Silva, C. Cesar, L. Barbosa, A. Schrank, C. Souza Filho, E. de Oliveira

Proceedings Volume 6892, 68921U (2008) https://doi.org/10.1117/12.761712

KEYWORDS: Nanoparticles, Laser ablation, Femtosecond phenomena, Quantum dots, Thermal effects, Pulsed laser operation, Thin films, Pulsed laser deposition, Particles, Transmission electron microscopy

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Proceedings Article | 11 February 2008 Paper

PbTe quantum dots in tellurite glass microstructured optical fiber

G. Jacob, D. Almeida, W. Faustino, E. Chillcce, E. Rodriguez, C. Brito Cruz, L. Barbosa, C. Cesar

Proceedings Volume 6902, 690206 (2008) https://doi.org/10.1117/12.761563

KEYWORDS: Glasses, Optical fibers, Quantum dots, Absorption, Photonic glasses, Borosilicate glass, Oxides, Structured optical fibers, Transmission electron microscopy, Tellurium

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Proceedings Article | 5 February 2008 Paper

Carbon nanotube-doped tellurite glasses

I. Mazali, E. Chillcce, O. Ferreira, E. Rodriguez, G. Jacob, C. Cesar, L. Barbosa

Proceedings Volume 6890, 689011 (2008) https://doi.org/10.1117/12.761816

KEYWORDS: Glasses, Refractive index, Carbon nanotubes, Nonlinear optics, Silica, Crystals, Raman spectroscopy, Carbon, Platinum, Oxidation

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SPIE Journal Paper | 1 January 2008 Open Access

Measuring electrical and mechanical properties of red blood cells with double optical tweezers

Adriana Fontes, Heloise Fernandes, André Thomaz, Luiz Barbosa, Maria Barjas-Castro, Carlos Cesar

JBO, Vol. 13, Issue 01, 014001, (January 2008) https://doi.org/10.1117/12.10.1117/1.2870108

KEYWORDS: Optical tweezers, Blood, Proteins, Silica, Ions, Particles, Optical testing, Velocity measurements, Clouds, Dielectrics

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Proceedings Article | 25 September 2007 Paper

PbTe quantum dots multilayer for optical switching device

E. Rodriguez, G. Kellermann, L. Moya, R. Moreira, A. Craievich, E. Jimenez, C. César, L. Barbosa

Proceedings Volume 6640, 66400E (2007) https://doi.org/10.1117/12.734661

KEYWORDS: X-rays, Particles, Nanoparticles, Quantum dots, Absorption, Multilayers, Glasses, Optical switching, Scattering, Fabry–Perot interferometers

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Proceedings Article | 17 September 2007 Paper

PbTe thin films grown by femtosecond pulsed laser deposition

E. Rodriguez, D. Silva, Lourdes Moya, C. Cesar, L. Barbosa, A. Schrank, C. Souza Filho, E. de Oliveira

Proceedings Volume 6698, 669809 (2007) https://doi.org/10.1117/12.738871

KEYWORDS: Thin films, Thin film growth, Femtosecond phenomena, Scanning electron microscopy, Pulsed laser deposition, Laser energy, Glasses, Thin film deposition, Absorption, Thermal effects

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Proceedings Article | 5 September 2007 Paper

Optical tweezers and multiphoton microscopies integrated photonic tool for mechanical and biochemical cell processes studies

A. de Thomaz, W. Faustino, A. Fontes, H. Fernandes, M. Barjas-Castro, K. Metze, S. Giorgio, L. Barbosa, C. Cesar

Proceedings Volume 6644, 66440H (2007) https://doi.org/10.1117/12.734495

KEYWORDS: Confocal microscopy, Optical tweezers, Luminescence, Multiphoton microscopy, Microscopy, Second-harmonic generation, Photonics, Cell mechanics, Optical fibers, Spatial resolution

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Proceedings Article | 5 September 2007 Paper

Studying red blood cell agglutination by measuring membrane viscosity with optical tweezers

Heloise Fernandes, Adriana Fontes, André de Thomaz, Luiz Barbosa, Maria Barjas-Castro, Carlos Cesar

Proceedings Volume 6644, 66440M (2007) https://doi.org/10.1117/12.734284

KEYWORDS: Optical tweezers, Proteins, Blood, Control systems, Silica, Surface plasmons, Rhodium, Statistical analysis, Hematology, Velocity measurements

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Proceedings Article | 13 July 2007 Paper

Studying red blood cell agglutination by measuring electrical and mechanical properties with a double optical tweezers

Adriana Fontes, Heloise Fernandes, André de Thomaz, Luiz Barbosa, Maria L. Barjas-Castro, Carlos Cesar

Proceedings Volume 6633, 66330R (2007) https://doi.org/10.1117/12.728447

KEYWORDS: Optical tweezers, Blood, Proteins, Silica, Ions, Particles, Geometrical optics, Optical testing, Clouds, Objectives

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Proceedings Article | 26 February 2007 Paper

Star cross section polymer fiber for evanescent field optical sensors

E. Chillcce, W. Faustino, G. Jacob, E. Rodriguez, W. Moreira, C. Cesar, L. Barbosa

Proceedings Volume 6469, 64690V (2007) https://doi.org/10.1117/12.700862

KEYWORDS: Polymethylmethacrylate, Stars, Polymers, Europium, Luminescence, Polymer optical fibers, Optical fibers, Solids, Optical sensors, Fiber lasers

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Proceedings Article | 20 February 2007 Paper

Development of soft-glasses photonic crystal fiber made by stacking-and-draw technique

E. Chillcce, C. Cordeiro, R. Ramos, B. C. Honório, E. Rodriguez, G. Jacob, C. Brito Cruz, C. Cesar, L. Barbosa

Proceedings Volume 6469, 64690U (2007) https://doi.org/10.1117/12.701141

KEYWORDS: Optical fibers, Glasses, Lead, Signal attenuation, Photonic crystal fibers, Capillaries, Borosilicate glass, Refractive index, Crystals, Lamps

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Proceedings Article | 20 February 2007 Paper

Use of CsCl to enhance the glass stability range of tellurite glasses for Er3+ doped optical fiber drawing

Carmen Rosa Eyzaguirre, Eugenio Rodriguez, Enver Fernandez Chillcce, Sérgio Paulo Amaral Osório, Carlos Lenz Cesar, Italo Odone Mazali, Oswaldo Luiz Alves, Luiz Carlos Barbosa

Proceedings Volume 6469, 646915 (2007) https://doi.org/10.1117/12.700184

KEYWORDS: Glasses, Optical fibers, Erbium, Bismuth, Refractive index, Ions, Chlorine, Single mode fibers, Silica, Crystals

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Proceedings Article | 19 February 2007 Paper

Leishmania amazonensis chemotaxis under glucose gradient studied by the strength and directionality of forces measured with optical tweezers

Liliana de Ysasa Pozzo, Adriana Fontes, André de Thomaz, Luiz Carlos Barbosa, Diana Copi Ayres, Selma Giorgio, Carlos Lenz Cesar

Proceedings Volume 6441, 64411R (2007) https://doi.org/10.1117/12.701196

KEYWORDS: Glucose, Microorganisms, Optical tweezers, Sensors, Optical testing, Diffusion, Nd:YAG lasers, Light scattering, Calibration, Particles

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Proceedings Article | 9 February 2007 Paper

Exact theory of optical forces of Mie scatterers exposed to high numerical aperture beams examined with 3D photonic force measurements

Antonio Neves, Adriana Fontes, Wendel Moreira, André de Thomaz, Diogo de Almeida, Luiz Barbosa, Carlos Cesar

Proceedings Volume 6483, 648309 (2007) https://doi.org/10.1117/12.700935

KEYWORDS: Optical tweezers, Optical spheres, Particles, Beam shaping, Polarization, Electromagnetism, 3D metrology, Objectives, Spherical lenses, Diffraction

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Proceedings Article | 6 February 2007 Paper

A study by GISAXS of PbTe/SiO2 multilayer deposited on Si(111)

G. Kellermann, E. Rodriguez, E. Jimenez, E. Chillcce, C. Cesar, L. Barbosa

Proceedings Volume 6481, 64810A (2007) https://doi.org/10.1117/12.701082

KEYWORDS: X-rays, Nanoparticles, Scattering, Multilayers, Particles, Quantum dots, Plasma enhanced chemical vapor deposition, Fabrication, Laser scattering, Reflectometry

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Proceedings Article | 14 September 2006 Paper

SiO2/PbTe quantum dots multilayers for the 1.3-1.5 µm region

E. Rodriguez, E. Jimenez, E. Chillcce, C. César, L. Barbosa

Proceedings Volume 6321, 63210L (2006) https://doi.org/10.1117/12.681257

KEYWORDS: Nanoparticles, Multilayers, Glasses, Electrodes, Refractive index, Time multiplexed optical shutter, Argon, Quantum dots, Dielectrics, Absorption

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Proceedings Article | 11 September 2006 Paper

Chemotaxis study using optical tweezers to observe the strength and directionality of forces of Leishmania amazonensis

Liliana Pozzo, Adriana Fontes, André de Thomaz, Luiz Barbosa, Diana Ayres, Selma Giorgio, Carlos Cesar

Proceedings Volume 6326, 63262A (2006) https://doi.org/10.1117/12.680999

KEYWORDS: Optical tweezers, Microorganisms, Sensors, Glucose, Diffusion, Nd:YAG lasers, Light scattering, Signal detection, Calibration, Dielectrics

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Proceedings Article | 31 August 2006 Paper

Two-photon absorption in direct bandgap semiconductors quantum dots

Lazaro Padilha, Jie Fu, G. Nootz, David Hagan, Eric Van Stryland, D. Buso, A. Martucci, Carlos Cesar, Luiz Barbosa, Carlos H. B. Cruz

Proceedings Volume 6327, 63270M (2006) https://doi.org/10.1117/12.681160

KEYWORDS: Quantum dots, Absorption, Semiconductors, Data modeling, Nanocrystals, Oscillators, Quantum optics, Nonlinear optics, Borosilicate glass, Glasses

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Proceedings Article | 30 August 2006 Paper

Measuring electrical and mechanical properties of red blood cells with a double optical tweezers

Adriana Fontes, Heloise Fernandes, Maria Barjas-Castro, André de Thomaz, Liliana Pozzo, Luiz Barbosa, Carlos Cesar

Proceedings Volume 6326, 63260N (2006) https://doi.org/10.1117/12.680900

KEYWORDS: Optical tweezers, Blood, Silica, Proteins, Clouds, Ions, Particles, Geometrical optics, Calibration, Microfluidics

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Proceedings Article | 30 August 2006 Paper

Exact partial wave expansion of optical beams with respect to arbitrary origin

Antônio Neves, Adriana Fontes, Wendel Moreira, André de Thomaz, Diogo Burigo de Almeida, Luiz Barbosa, Carlos Cesar

Proceedings Volume 6326, 63260J (2006) https://doi.org/10.1117/12.680898

KEYWORDS: Beam shaping, Objectives, Spherical lenses, Electromagnetism, Particles, Diffraction, Polarization, Solids, Gaussian beams, Laser scattering

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Proceedings Article | 30 August 2006 Paper

Double optical tweezers for 3D photonic force measurements of Mie scatterers

Antônio Neves, Adriana Fontes, Wendel Moreira, André de Thomaz, Diogo Burigo de Almeida, Luíz Barbosa, Carlos Cesar

Proceedings Volume 6326, 63260L (2006) https://doi.org/10.1117/12.680859

KEYWORDS: Optical tweezers, Optical spheres, 3D metrology, 3D modeling, Polarization, Particles, Diffraction, Scatter measurement, Dielectric polarization, Dielectrics

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Proceedings Article | 24 August 2006 Paper

Micro-structured Er3+-Tm3+ co-doped tellurite fiber for broadband optical amplifier around 1550 nm

E. Chillcce, C. Cordeiro, R. Ramos, B. Honorio, E. Rodriguez, C. Brito Cruz, C. Cesar, L. Barbosa

Proceedings Volume 6314, 63140W (2006) https://doi.org/10.1117/12.681277

KEYWORDS: Erbium, Structured optical fibers, Glasses, Capillaries, Optical fibers, Thulium, Optical amplifiers, Silica, Fabrication, Supercontinuum generation

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Proceedings Article | 28 February 2006 Paper

Er³⁺-doped tellurite glass waveguides produced by fiber on glass (FOG) method

V. Rivera, E. Rodriguez, E. Chillcce, I. Mazali, C. Cesar, L. Barbosa

Proceedings Volume 6116, 611610 (2006) https://doi.org/10.1117/12.647152

KEYWORDS: Glasses, Fiber optic gyroscopes, Erbium, Waveguides, Optical fibers, Ions, Crystals, Refractive index, Optics manufacturing, Scanning electron microscopy

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Proceedings Article | 28 February 2006 Paper

Waveguides produced by ion-exchange in Er³⁺-doped tellurite glass

V. A. G. Rivera, E. F. Chillcce, E. Rodriguez, I. O. Mazali, C. L. Cesar, L. C. Barbosa

Proceedings Volume 6116, 61160Z (2006) https://doi.org/10.1117/12.646999

KEYWORDS: Glasses, Waveguides, Erbium, Ions, Channel waveguides, Ion exchange, Signal attenuation, Silver, Sodium, Absorption

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Proceedings Article | 28 February 2006 Paper

Photothermal spectroscopic characterization in tellurite glasses codoped with rare-earth ions

Viviane Pilla, Enver Chillcce, Eugenio Rodriguez, Thomaz Catunda, Egberto Munin, Carlos Cesar, Luiz Barbosa

Proceedings Volume 6116, 61160X (2006) https://doi.org/10.1117/12.646583

KEYWORDS: Glasses, Thulium, Erbium, Luminescence, Laser beam diagnostics, Spectroscopy, Quantum efficiency, Ions, Absorption, Absorbance

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Proceedings Article | 22 February 2006 Paper

Tellurite photonic crystal fiber with Er³⁺-Tm³⁺ for broadband optical amplifier in 1550nm

E. Chillcce, C. Cordeiro, E. Rodriguez, C. Brito Cruz, C. César, L. Barbosa

Proceedings Volume 6116, 611604 (2006) https://doi.org/10.1117/12.646530

KEYWORDS: Erbium, Thulium, Glasses, Photonic crystal fibers, Capillaries, Optical amplifiers, Silica, Fiber lasers, Solids, Fabrication

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Proceedings Article | 21 February 2006 Paper

Red blood cell membrane viscoelasticity, agglutination, and zeta potential measurements with double optical tweezers

Adriana Fontes, Heloise Fernandes, Maria Barjas-Castro, André de Thomaz, Liliana de Ysasa Pozzo, Luiz Barbosa, Carlos Cesar

Proceedings Volume 6088, 608811 (2006) https://doi.org/10.1117/12.646682

KEYWORDS: Optical tweezers, Blood, Silica, Optical testing, Proteins, Calibration, Particles, Ions, Geometrical optics, Velocity measurements

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Proceedings Article | 21 February 2006 Paper

Monitoring activity of living cells marked with colloidal semiconductor quantum dots

Patricia Farias, Beate Santos, Frederico Menezes, Aluizio Brasil, Jr., Liliane Lima, Diego Silva, Alice Vieira, Ricardo Ferreira, Adriana Fontes, Diogo Almeida, Luiz Barbosa, Carlos Cesar

Proceedings Volume 6088, 60880G (2006) https://doi.org/10.1117/12.646817

KEYWORDS: Quantum dots, Glucose, Yeast, Luminescence, Nanocrystals, Semiconductors, Confocal microscopy, Molecules, Tellurium, Absorption

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Proceedings Article | 9 February 2006 Paper

Optical tweezers 3D photonic force spectroscopy

Antonio Neves, Adriana Fontes, Wendel Moreira, André de Thomaz, Diogo de Almeida, Luiz Barbosa, Carlos Cesar

Proceedings Volume 6131, 61310F (2006) https://doi.org/10.1117/12.646899

KEYWORDS: Optical tweezers, Particles, Dielectric polarization, Optical spheres, Objectives, Spectroscopy, Nd:YAG lasers, Polarization, Microscopes, Mirrors

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Proceedings Article | 7 February 2006 Paper

One-dimensional photonic crystal for the 1.3-1.5 μm region

E. Rodriguez, E. Jimenez, C. César, L. Barbosa

Proceedings Volume 6129, 61290J (2006) https://doi.org/10.1117/12.646921

KEYWORDS: Absorption, Multilayers, Nanoparticles, Photonic crystals, Quantum dots, Refractive index, Dielectrics, Glasses, Plasma enhanced chemical vapor deposition, X-ray diffraction

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Proceedings Article | 19 August 2005 Paper

Determination of fluid viscosity and femto Newton forces of Leishmania amazonensis using optical tweezers

Adriana Fontes, Selma Giorgio, Archimedes de Castro, Jr., Vivaldo Neto, Liliana de Y. Pozzo, Andre de Thomaz, Luiz Barbosa, Carlos Cesar

Proceedings Volume 5930, 593025 (2005) https://doi.org/10.1117/12.620745

KEYWORDS: Optical tweezers, Optical spheres, Geometrical optics, Calibration, Particles, Refractive index, Microfluidics, Microscopes, Objectives, Optical calibration

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Proceedings Article | 19 August 2005 Paper

Microspectroscopy and scanning microscopy in an optical tweezers system

Adriana Fontes, Antonio Neves, Wendel Moreira, Andre de Thomaz, Luis Barbosa, Patricia de Farias, Beate Santos, Ricardo Ferreira, Ana de Paula, Katsuhiro Ajito, Carlos Cesar

Proceedings Volume 5930, 593007 (2005) https://doi.org/10.1117/12.620754

KEYWORDS: Raman spectroscopy, Luminescence, Optical tweezers, Spectroscopy, Imaging spectroscopy, Quantum dots, Cadmium sulfide, Particles, Blood, Microscopes

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Proceedings Article | 18 August 2005 Paper

Two photon absorption spectra in CdTe quantum dots

Lazaro Padilha, Jie Fu, David Hagan, Eric Van Stryland, Carlos Cesar, Luiz Barbosa, Carlos Cruz

Proceedings Volume 5931, 59310U (2005) https://doi.org/10.1117/12.617338

KEYWORDS: Absorption, Quantum dots, Semiconductors, Glasses, Borosilicate glass, Heat treatments, Visible radiation, Solids, Nonlinear optics, Femtosecond phenomena

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Proceedings Article | 18 August 2005 Paper

Force spectroscopy and two photon excited luminescence in an optical tweezers system

Adriana Fontes, Antonio Alvaro Ranha Neves, Wendel Lopes Moreira, Andre Alexandre de Thomaz, Luiz Carlos Barbosa, Ana Maria de Paula, Katsuhiro Ajito, Carlos Lenz Cesar

Proceedings Volume 5930, 59300C (2005) https://doi.org/10.1117/12.620744

KEYWORDS: Optical tweezers, Luminescence, Particles, Spectroscopy, Light scattering, Two photon excitation microscopy, Sapphire lasers, Nd:YAG lasers, Dielectric polarization, Mie scattering

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Proceedings Article | 18 August 2005 Paper

Mechanical properties of stored red blood cells using optical tweezers

Adriana Fontes, Andre Alexandre de Thomaz, Liliana de Ysasa Pozzo, Maria de Lourdes Barjas-Castro, Marcelo Brandao, Sara Saad, Luiz Carlos Barbosa, Carlos Lenz Cesar

Proceedings Volume 5930, 59301Q (2005) https://doi.org/10.1117/12.620758

KEYWORDS: Blood, Optical tweezers, Plasma, Laser optics, Hematology, Surface plasmons, Microfluidics, Blood circulation, Microscopes, Optical testing

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Proceedings Article | 13 April 2005 Paper

Erbium doped tellurite photonic crystal optical fiber

Sergio Osorio, Enver Fernandez, Eugenio Rodriguez, Carlos Cesar, Luiz Barbosa

Proceedings Volume 5733, (2005) https://doi.org/10.1117/12.587904

KEYWORDS: Optical fibers, Glasses, Erbium, Photonic crystals, Capillaries, Photonic crystal fibers, Luminescence, Optical amplifiers, Argon ion lasers, Ions

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