Many materials have a well-characterized refractive index, but these indices depend strongly. Fused silica (a pure form of glass, also called fused quartz), 589. In optics, the refractive index or index of refraction n of a material is a dimensionless number.
In general, the refractive index of a glass increases with its density. However, there does not exist an overall linear relation between the refractive . Refractive index database – Optical constants (refractive index and extinction coefficient, n k) of 1000+ materials. Free online database of refractive index values, with material optical constants listed versus wavelength for Thin Film Thickness Measurement.
Refracting optical materials are specified by their refractive indices for a. Optical glasses are available in a wide range of refractive indices and dispersions. The index of refraction and Abbe number of a glass are typically used by designers as degrees of freedom when designing systems.
