Tin depth profile in surface layers of a float glass

Bernard Dugnoille; I. Rase; O. Virlet

doi:10.1117/12.192072

4 November 1994 Tin depth profile in surface layers of a float glass

Bernard Dugnoille, I. Rase, O. Virlet

Proceedings Volume 2253, Optical Interference Coatings; (1994) https://doi.org/10.1117/12.192072
Event: 1994 International Symposium on Optical Interference Coatings, 1994, Grenoble, France

Abstract

Window glass is principally produced by the float technique which causes tin diffusion into glass creating a layer on each face. The complex refractive index (N_F) of each face is slightly different from that found in the bulk of the glass (N_S) and asymptotically approaches this value. The depth profile of the complex refractive index of each layer may be determined by means of multiangle ellipsometric measurements and the reflectance formula. By assuming glass as the matrix and tin as inclusions, the effective medium theory allows to determine the refractive index of this medium as a function of tin volume fraction. Knowing this evolution and the one of the layer refractive index as a function of depth, the tin volume fraction profile in the glass substrate is obtained.

Citation Download Citation

Bernard Dugnoille, I. Rase, and O. Virlet "Tin depth profile in surface layers of a float glass", Proc. SPIE 2253, Optical Interference Coatings, (4 November 1994); https://doi.org/10.1117/12.192072

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