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Nature of heterophase inclusions in high-purity optical fiber materials as studied with 3D laser ultramicroscopy |
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| Affiliation: | 1. University of Silesia, Institute of Chemistry, Szkolna 9, 40-007 Katowice, Poland;2. Bialystok University of Technology, Faculty of Electrical Engineering, Wiejska 45D, 15-351 Bialystok, Poland;1. General Physics Institute RAS, Moscow, Russia;2. Czech Technical University in Prague, Prague, Czech Republic;3. Institute for Single Crystals NAN, Kharkov, Ukraine;1. Institute of Physics AS CR, Cukrovarnicka 10, 162 00 Prague, Czech Republic;2. Institute of Physics, University of Tartu, Ravila 14c, 50411 Tartu, Estonia;3. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Moscow 119991, Russia |
| Abstract: | 3D laser ultramicroscopy (3D LUM) is intended specially for determining the concentration and size distribution of submicron inclusions in the bulk samples of high-purity materials for visible and IR fiber optics. In this work the 3D LUM technique is shown to be able to identify the nature of individual inclusions detected. The measurement of the light scattered by an inclusion at a varied probe beam wavelength and polarization and at a varied scattered light collection angle makes it possible to determine the inclusion refractive index. The 3D LUM possibilities are illustrated by the example of studying the inclusion nature in the As2S3 glass samples prepared by the direct synthesis from elements in a quartz container at elevated temperatures. |
| Keywords: | Optical fiber materials Optical losses Inclusion characterization Light scattering Laser ultramicroscopy Chalcogenide glasses |
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