It is noted that in the region of low absorption between the infrared and vacuum ultraviolet bands, the index of refraction can be evaluated from prism data, and this has been accomplished with great precision. The measured k values, however, can be strongly influenced by the presence of impurity and defect absorption.doi:10.1063/1...
The SiO2 content is the sole factor that controls the refractive index. Values could be obtained for the factors with which each structural unit contributes in the refractive index. The content of Al2O3 or Na2O has no effect on the refractive index. The factors (differential refraction) are ...
2 Abstract Refractive index and molar refraction of Li2O–, Na2O–, CaO–, and BaO–Ga2O3–SiO2glasses have been used to test the validity of a structural model of silicate glasses containing Ga2O3glasses. Ga2O3enters these types of glass in a similar manner as Al2O3. It is assumed th...
Abstract Refractive index and molar refraction of Li2O–, Na2O–, CaO–, and BaO–Ga2O3–SiO2glasses have been used to test the validity of a structural model of silicate glasses containing Ga2O3glasses. Ga2O3enters these types of glass in a similar manner as Al2O3. It is assumed that...
Refraction Coefficient / 1.45 >Crystalline silica powder can be sorted on basis of following characteristics and prepared as required by customers: ItemIndex of CorrectionIntroduction Purity SiO2content Available within 99.0-99.9% Ion impurity Na+、Cl-,etc. Can be reduced below 1ppm Particle size dis...
Refraction Coefficient / 1.54 >Crystalline silica powder can be sorted on basis of following characteristics and prepared as required by customers: ItemIndex of CorrectionIntroduction Purity SiO2content Available within 98.0-99.9% Ion impurity Na+、Cl-,etc Can be reduced below 3ppm Particle size distr...
3,659,915 describes glass optical fibers made of such materials, and identifies a number of dopant materials, including TiO2 and Al2 O3, which can be added to fused silica to raise its index of refraction. The bulk of the optical fiber sold for commercial use contains GeO2 as a dopant...
452). Such optical waveguides are required to have a higher index of refraction region surrounded by a lower index of refraction region. The thrust of this work has been the provision of high index and low index glasses exhibiting little absorption or scattering loss at the wavelength desired ...
A considerable portion of this system is liquid at 1400°C. Diagrams show the isotherms and the index of refraction of the glasses formed.Two quintuple points have been established in this investigation. One point is at the composition, SiO242% by weight, Al2O313%, and FeO 45%, and is...
Films were characterized for their thickness, index of refraction, and photoluminescence at room temperature. Photoluminescence yield is strongly enhanced for vacuum annealing in the temperature range 500 - 750 degrees C. Reasonable room-temperature photoluminescence is also observed for annealing at 1000 ...