A5086000879- Glass properties and applications
- Luminescence Properties of Advanced Materials
- Solid State Laser Technologies
- Optical properties and cooling technologies in crystalline materials
- Thermography and Photoacoustic Techniques
- Photorefractive and Nonlinear Optics
- thermodynamics and calorimetric analyses
- Cold Atom Physics and Bose-Einstein Condensates
- Phase-change materials and chalcogenides
- Biodiesel Production and Applications
- Spectroscopy and Laser Applications
- Chemical Thermodynamics and Molecular Structure
- Photonic Crystals and Applications
- Chalcogenide Semiconductor Thin Films
- Enzyme Catalysis and Immobilization
- Photoacoustic and Ultrasonic Imaging
- Gas Sensing Nanomaterials and Sensors
- Spectroscopy and Quantum Chemical Studies
- Advanced Optical Sensing Technologies
- Calibration and Measurement Techniques
- Optical and Acousto-Optic Technologies
- Spectroscopy Techniques in Biomedical and Chemical Research
- Radiation Detection and Scintillator Technologies
- Scientific Measurement and Uncertainty Evaluation
- Advanced Combustion Engine Technologies
Universidade Estadual de Mato Grosso do Sul
2015-2024
University of Michigan
2023
National Research Council Canada
2022
European Union of Medical Specialists
2010-2022
Natura (Brazil)
2021
Research Center for Natural Resources, Environment and Society
2020
Universidade Federal da Grande Dourados
2020
University of New Mexico
2015
Universidade Estadual de Maringá
2012-2013
District University of Bogotá
2011
In this paper, a broad combined orange-red emission from Eu²⁺- and Eu³⁺-doped low-silica calcium aluminosilicate (LSCAS) glass is reported. Spectroscopic results demonstrate that it possible to tune the wavelength by changing excitation in UV-Vis region. The color coordinates for spectra were calculated, using Commission Internationale de l'Éclairage 1931 1976 chromatic diagrams, note they are dependent on wavelength. addition, (u', v') investigated LSCAS samples close Planckian spectrum...
A dispersive white-light Michelson interferometer was used to determine the wavelength dependence of refractive index (n) in visible range from 425 775 nm and thermo-optical coefficient (dn/dT) fused silica (FS) borosilicate glass (BK7). For FS, values obtained for n dn/dT at 546 were 1.46079 11.3×10-6 K-1, respectively, while BK7 1.51825 2.2×10-6 which is good agreement with literature. The accuracy methodology almost 10-6, enabling precise spectroscopic characterization materials across a...
We report a theoretical model and experimental results for laser-induced lensing in solids. The distinguishes quantifies the contributions from population thermal effects. Laser-induced ytterbium-doped fluorozirconate glass ZBLAN:Yb(3+) is measured, optical properties obtained analyzing data with proposed agree well published values. Photothermal techniques are used extensively investigation of laser laser-cooling materials, developed here enables interpretation convoluted signals that have...
Abstract This work reports on the energy transfer efficiency for Nd 3+ /Yb co‐doped tellurite glasses (80TO 2 ‐20WO 3 , in mol%,). The correlation between Yb ion concentration and downconversion mechanism was investigated using optical thermal lens spectroscopies, which enabled investigation of radiative nonradiative processes, respectively, involved from neodymium to ytterbium. near‐infrared fluorescence disappeared almost entirely when maximum ions (4 mol%) doped into host. In contrast,...
Optical losses are the major drawback to overcome in solar energy industry and development. Conversion of radiation into heat accounts for over 80% incident energy, which is driven by several aspects like chosen design encapsulation devices, built-in materials, mismatch between spectrum active cell's bandgap energy. Photoacoustic (PA) photothermal (PT) methods characterization techniques based on generation after illumination a material respective detection. Since beginning panel industrial...
Photoluminescence quantum yields denote a critical variable to characterise fluorophore and its potential performance. Their determination, by means of methodologies employing reference standard materials, inevitably leads large uncertainties. In response this, herein we report for the first time an innovative elegant methodology, whereby use neat solvent/reference material required thermal lens approaches is eliminated coupling it photoluminescence spectroscopy, allowing discrimination...
We recently reported that Ti(3+)-doped low-silica calcium aluminosilicate glass presents long luminescence lifetime (170 micros) and broad emission band (190 nm) shifted toward the visible region when compared with those from Ti(3+):sapphire single crystal glasses [Phys. Rev. Lett.100, 027402 (2008)]. Here we demonstrate this also shows high values of both gain cross section (approximately 4.7 x 10(-19) cm(2)) quantum efficiency 70%). By comparing these for crystal, can conclude studied is a...