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Tm3+ and Tm3+-Ho3+ doped fluorogermanate glasses for S-band amplifiers
(2005-07-15)
Two series of glasses with composition (mol%) 70PbGeO3- 15PbF2-15CdF2, the first one with different Tm 3+ contents (0.2, 0.4, 0.6 and 0.8 mol%) and the second one with 0.2 mol% Tm3+ and different Ho3+ contents (0.1, 0.5, ...
Study of Er3+ fluorescence on tellurite glasses containing Ag nanoparticles
(2011-04-12)
Optical characteristics of tellurite glasses containing silver nanoparticles (NPs) and the influence on the emission spectrum of Er 3+ ions were studied. The transitions 4f ↔ 4f from erbium ions, mainly the 4I13/2 → 4I15/2 ...
Antimony glasses with large nonlinear refractive indices, small two-photon absorption coefficients and ultrafast response at telecom wavelengths
(2007-12-01)
Nonlinear (NL) optical properties of antimony oxide based glasses (AG) were characterized for excitation wavelengths from 800 to 1600 m. The NL refractive indices, n2, and the two-photon absorption (TPA) coefficient, β, ...
Worker and Manager Judgements About Factors that Facilitate Knowledge Sharing: Insights from the Brazilian Glass Segment
(2020-01-01)
Purpose: This study aims to assess factors of the tacit knowledge in the glass sector. Its focus is based on the managerial and worker perspectives about better knowledge sharing on the shop floor. Design/Methodology/Approach: ...
Spectroscopic properties of Tm3+ doped fluoroindate glass
(2003-12-01)
Optical absorption and fluorescence were investigated in Tm3+ doped fluoroindate glass. The spectroscopic parameters for transitions in the 4f11 configuration were determined. The fluorescence study revealed the origin of ...
Defect-induced photoluminescence of powdered silica glass
(2008-03-27)
Visible photoluminescence was generated in standard soda-lime-silica glass powder, mechanically milled in a high-energy attrition mill. The broad emission band maximum shows a linear dependence on the exciting wavelength, ...
Reversible holographic 3D data storage in oxide glasses using visible lasers
(2006-04-01)
Antimony based glasses have been investigated for the first time regarding the possibility of holographic data storage using visible lasers sources. Changes in both refractive index and the absorption coefficient were ...
Glass-ceramic material from the SiO 2-Al 2O 3-CaO system using sugar-cane bagasse ash (SCBA)
(2011-08-31)
Brazil is the world's largest producer of alcohol and sugar from sugarcane. Currently, sugarcane bagasse is burned in boilers to produce steam and electrical energy, producing a huge volume of ash. The major component of ...
Experimental observation of infrared spectral enlargement in As 2S3 suspended core microstructured fiber
(2010-07-14)
The development of chalcogenide glasses fibers for application in the infrared wavelength region between 1 and 10 μm is a big opportunity. More particularly, the possibility to generate efficient non linear effects above ...