Fabrication and characterization of chalcogenide glass for hollow Bragg fibers
Low- and high-refractive-index chalcogenide glasses are studied for their potential use in the fabrication of one-dimensional hollow Bragg fibers. The low-index glasses are based on the GeSe-glass systems with indices varying from 2.0 to 2.5, while the high-index glasses are formed from the AgAsSe glasses with indices ranging from 2.8 to 3.8. High-purity elemental starting materials are distilled and the surface oxides removed prior to mixing in a rocking furnace. The refractive indices of the AgAsSe glasses, measured using a CO2 laser reflectometer, were near 3.10 for the compositions most compatible with the low-index Ge20Se80 glass (n=2.46). Spectral measurements show impurity absorption bands between 12 and 16 {mu}m. The loss at 10.6 {mu}m for the Ag25As40Se35 glass measured using CO2 laser calorimetry was 1.16x10{sup -3} cm{sup -1}.
- OSTI ID:
- 22036373
- Journal Information:
- Applied Optics, Vol. 48, Issue 16; Other Information: (c) 2009 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6935
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABSORPTION
AMORPHOUS STATE
ARSENIC SELENIDES
BRAGG REFLECTION
CALORIMETRY
CARBON DIOXIDE LASERS
CHALCOGENIDES
CHARGE-COUPLED DEVICES
DIFFRACTION
GERMANIUM SELENIDES
GLASS
IMAGE PROCESSING
INFRARED SPECTRA
LOSSES
OPTICAL FIBERS
OPTICAL SYSTEMS
OXIDES
REFRACTIVE INDEX
SILVER COMPOUNDS
SURFACES