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Title: Determination of the optical functions of transparent glasses by using spectroscopic ellipsometry

Abstract

Two-channel spectroscopic polarization-modulation ellipsometry measurements have been made on four different glasses (fused SiO{sub 2}, fine-annealed BK-7, a lead-indium-phosphate glass, and a germanium-arsenic-selenium glass). We show that this technique is sensitive to thin surface layers and that these surface layers can be modeled by using the Bruggeman effective-medium theory with 50% glass and 50% voids. By correcting the experimental spectra for these surface layers, we determined the refractive index of the sample within an error of {plus minus}0.002 in the transparent region. For wavelength regions where the material is normally opaque, the ellipsometric data can be corrected for this overlayer, thereby increasing the accuracy of the determination of both the refractive index and the extinction coefficient.

Authors:
;  [1]
  1. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee (USA)
Publication Date:
OSTI Identifier:
6244984
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Journal Article
Journal Name:
Applied Optics; (United States)
Additional Journal Information:
Journal Volume: 30:30; Journal ID: ISSN 0003-6935
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; GLASS; ELLIPSOMETRY; OPTICAL PROPERTIES; MEASURING METHODS; EXPERIMENTAL DATA; POLARIMETRY; REFRACTIVE INDEX; SILICA; SPECTROSCOPY; CHALCOGENIDES; DATA; INFORMATION; MINERALS; NUMERICAL DATA; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SILICON COMPOUNDS; SILICON OXIDES; 440600* - Optical Instrumentation- (1990-)

Citation Formats

Jellison, Jr, G E, and Sales, B C. Determination of the optical functions of transparent glasses by using spectroscopic ellipsometry. United States: N. p., 1991. Web. doi:10.1364/AO.30.004310.
Jellison, Jr, G E, & Sales, B C. Determination of the optical functions of transparent glasses by using spectroscopic ellipsometry. United States. https://doi.org/10.1364/AO.30.004310
Jellison, Jr, G E, and Sales, B C. 1991. "Determination of the optical functions of transparent glasses by using spectroscopic ellipsometry". United States. https://doi.org/10.1364/AO.30.004310.
@article{osti_6244984,
title = {Determination of the optical functions of transparent glasses by using spectroscopic ellipsometry},
author = {Jellison, Jr, G E and Sales, B C},
abstractNote = {Two-channel spectroscopic polarization-modulation ellipsometry measurements have been made on four different glasses (fused SiO{sub 2}, fine-annealed BK-7, a lead-indium-phosphate glass, and a germanium-arsenic-selenium glass). We show that this technique is sensitive to thin surface layers and that these surface layers can be modeled by using the Bruggeman effective-medium theory with 50% glass and 50% voids. By correcting the experimental spectra for these surface layers, we determined the refractive index of the sample within an error of {plus minus}0.002 in the transparent region. For wavelength regions where the material is normally opaque, the ellipsometric data can be corrected for this overlayer, thereby increasing the accuracy of the determination of both the refractive index and the extinction coefficient.},
doi = {10.1364/AO.30.004310},
url = {https://www.osti.gov/biblio/6244984}, journal = {Applied Optics; (United States)},
issn = {0003-6935},
number = ,
volume = 30:30,
place = {United States},
year = {Sun Oct 20 00:00:00 EDT 1991},
month = {Sun Oct 20 00:00:00 EDT 1991}
}