Refraction and dispersion in optical glass

The reflectivity spectra of representative glasses were analyzed to obtain their uv absorption spectra. From these, we show that the first few inverse moments of the absorption give a good representation of the refractive index for visible light when used with the generalized Cauchy dispersion formu...

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Bibliographic Details
Published inNuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Vol. 218; pp. 170 - 175
Main Authors Smith, D.Y., Shiles, E., Inokuti, Mitio
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2004
Subjects
Absorption spectra
Dispersion formulas
Optical glass
Optical properties
78.40.Pg
Optical properties
78.20.Bh
78.20.Ci
Absorption spectra
Dispersion formulas
71.23.Cq
Optical glass
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Summary:The reflectivity spectra of representative glasses were analyzed to obtain their uv absorption spectra. From these, we show that the first few inverse moments of the absorption give a good representation of the refractive index for visible light when used with the generalized Cauchy dispersion formula [Radiat. Eff. Def. Sol. 157 (2002) 823]. The absorption spectra also illustrate the roles of modifier ions in determining the visible refractive index. These include introduction of ion-specific absorptions (uv color centers); broadening, shifting and altering the strength of glass-former absorptions; and alteration of the density and structure of the glass' random network.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2004.01.006