Journal ArticleDOI
Optical attenuation in titania-silica glasses
D.S. Carson,Robert D. Maurer +1 more
TLDR
In this article, the authors investigated the bleaching of bulk titania-silica glasses in the annealing temperature range and showed that the sample-size kinetics can be predicted from the hydrogen diffusion coefficient.Abstract:
The bleaching of bulk titania-silica glasses in the annealing temperature range is investigated. The sample-size kinetics can be predicted from the hydrogen diffusion coefficient. Hydrogen gas is evolved from both titania-silica and silica glass but in larger amount from the former. In the bleaching process, Ti 3+ ions disappear from the titania-silica glass. These results are consistent with the coloration caused by Ti 3+ which is oxidized by OH- in the glass to produce gaseous hydrogen.read more
Citations
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Journal ArticleDOI
Porous Glass‐Ceramic in the CαO–TiO2–P2O5 System
TL;DR: In this paper, a porous glass-ceramic in the CaO-TiO2-P2O5 system has been prepared by crystallization and subsequent chemical leaching of the corresponding glass.
Journal ArticleDOI
Optical absorption and Mössbauer spectra of Fe, Ti silicate glasses
TL;DR: In this paper, optical absorption spectra of reduced synthetic Fe, Ti silicate glasses were measured at elevated temperatures and results correlated with information from Mossbauer spectra in order to resolved several controversies concerning the species and coordination environment causing each absorption.
Journal ArticleDOI
Non-linear optical properties of Li2O–TiO2–P2O5 glasses
Abstract: The non-linear optical properties of Li2O–TiO2–P2O5 glasses were measured by Z-scan technique using a nanosecond pulsed laser. The non-linear refractive index (γZ) estimated from Z-scan normalized transmittance was considered to include the optical Kerr effect (γK), the thermo-optic effect (γT) and the resonant non-linearity (γR) related to Ti3+ ions of which content was increased with TiO2 content. The sign of γZ for glasses with 5 and 10 mol% TiO2 was positive, whereas for glasses with 15 and 20 mol% TiO2 it was negative. The γT of all the glasses in the present work was negative due to the negative temperature coefficient of linear refractive index (dn/dT), and decreased with increasing TiO2 content, and was considered to be dominated by the two-photon absorption. For Ti3+-containing 50Li2O · 15TiO2 · 35P2O5 glass with negative γZ (−1.78 × 10−18 m2 W−1), each of these three contributions was evaluated. The thermo-optic γT of the Ti3+-containing glass was determined to be −22.11 × 10−18 m2 W−1. Using the γZ and γT for the Ti3+-free glass made by remelting the Ti3+-containing glass at 1000 °C under O2 atmosphere, the optical Kerr γK of the Ti3+-containing glass was found to be positive (11.87 × 10−18 m2 W−1). The resonant γR of the Ti3+-containing glass was found to be positive (8.46 × 10−18 m2 W−1). As a result, it was concluded that negative γZ of the Ti3+-containing glass resulted from negative thermo-optic γT.
Journal ArticleDOI
State of Ti3+ ion and Ti3+−Ti4+ redox reaction in reduced sodium silicate glasses
TL;DR: In this article, the state of Ti 3+ ions in reduced sodium silicate glasses was investigated by optical absorption and ESR spectroscopies, and it was concluded that Ti 3 + ions in these glasses are in an octahedral environment with a tetragonality less than unity.
References
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Book
The mathematics of diffusion
TL;DR: Though it incorporates much new material, this new edition preserves the general character of the book in providing a collection of solutions of the equations of diffusion and describing how these solutions may be obtained.
Journal ArticleDOI
Diffusion of Hydrogen and Deuterium in Fused Quartz
TL;DR: In this paper, a mass spectrometer was used to record the transfer of hydrogen and deuterium through hollow, thinwalled cylinders of fused quartz over the temperature range of 300-1000°C.
Journal ArticleDOI
Diffusion of Hydrogen in Natural and Synthetic Fused Quartz
TL;DR: In this article, a mass spectrometer study was made to compare the transport characteristics of hydrogen and deuterium through hollow, thin walled cylinders of three types of fused quartz.
Journal ArticleDOI
Spectral Response of Low-Loss Optical Waveguides
Donald B. Keck,A. R. Tynes +1 more
TL;DR: Independent attenuation measurements from 600 nm to 1060 nm have been made on low-loss waveguides and bulk cladding glass, using both laser and scanning-prism monochromator sources, and assumptions too small to be precisely measured in the bulk glass measured in them.