Y. Fang
Determining small refractive index contrast in chalcogenide-glass pairs at mid-infrared wavelengths
Fang, Y.; Furniss, D.; Jayasuriya, D.; Parnell, H.; Crane, R.; Tang, Z.Q.; Barney, E.; Canedy, C.L.; Kim, C.S.; Kim, M.; Merritt, C.D.; Bewley, W.W.; Vurgaftman, I.; Meyer, J.R.; Seddon, A.B.; Benson, T.M.
Authors
DAVID FURNISS DAVID.FURNISS@NOTTINGHAM.AC.UK
Research Officer
D. Jayasuriya
H. Parnell
R. Crane
Z.Q. Tang
EMMA BARNEY EMMA.BARNEY@NOTTINGHAM.AC.UK
Associate Professor
C.L. Canedy
C.S. Kim
M. Kim
C.D. Merritt
W.W. Bewley
I. Vurgaftman
J.R. Meyer
ANGELA SEDDON angela.seddon@nottingham.ac.uk
Professor of Inorganic Materials
T.M. Benson
Abstract
A two-composition thin film (Ge20Sb10Se70/Ge20Sb10Se67S3 atomic%core/cladding glasses) was fabricated using a hot-fibre-pressing technique in which both glasses follow the same post-fibre processing. A simple approach is proposed that uses normal incidence transmission spectra to determine their refractive index contrast over the wavelength range from 2 to 25 μm with an error of less than _ 0.002. Using an improved Swanepoel method, the calculated numerical aperture of these two compositions was within _ 0.011 of that obtained from prism minimum deviation measurements. Results show that introducing 3 atomic % S into the Ge-Sb-Se glass system lowered the refractive index and blue-shifted the visible optical bandgap, the far-infrared fundamental vibrational absorption bands and the zero-dispersion wavelength.
Citation
Fang, Y., Furniss, D., Jayasuriya, D., Parnell, H., Crane, R., Tang, Z., …Benson, T. (2019). Determining small refractive index contrast in chalcogenide-glass pairs at mid-infrared wavelengths. Optical Materials Express, 9(5), 2022-2036. https://doi.org/10.1364/OME.9.002022
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 28, 2019 |
Online Publication Date | Apr 2, 2019 |
Publication Date | May 1, 2019 |
Deposit Date | Apr 1, 2019 |
Publicly Available Date | Mar 28, 2024 |
Journal | Optical Materials Express |
Electronic ISSN | 2159-3930 |
Publisher | Optical Society of America |
Peer Reviewed | Peer Reviewed |
Volume | 9 |
Issue | 5 |
Pages | 2022-2036 |
DOI | https://doi.org/10.1364/OME.9.002022 |
Public URL | https://nottingham-repository.worktribe.com/output/1724205 |
Publisher URL | https://www.osapublishing.org/ome/abstract.cfm?uri=ome-9-5-2022 |
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