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Refractive‐Index Dispersion of Tellurite Glasses in the Region from 0.40 to 1.71 μm
Author(s) -
Takebe Hiromichi,
Pujino Shigeru,
Morinaga Kenji
Publication year - 1994
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1994.tb04621.x
Subject(s) - refractive index , wavelength , materials science , resonance (particle physics) , dispersion (optics) , normalized frequency (unit) , optics , ultraviolet , analytical chemistry (journal) , chemistry , optoelectronics , atomic physics , physics , phase locked loop , chromatography , frequency synthesizer , phase noise
The refractive index of binary tellurite glasses with various modifiers was measured down to the fifth decimal place in the wavelength range of 0.40–1.71 μm using the minimumedeviation method. An empirical equation based on the single‐oscillator Drude–Voigt dispersion equation. n d 2 = A·Nf λ 0 2 + B , is obtained, where n d is the refractive index at 0.5876 μm, N is the number of molecules in a unit volume, f is the average oscillator strength, λ 0 is the average resonance wavelength, and A and B are constants. The refractive index n d of tellurite glasses is substantially determined by the resonance wavelength at the ultraviolet region, which is affected by the main constituent, TeO 2 .