(INVITED) Methods for determining the refractive indices and thermo-optic coefficients of chalcogenide glasses at MIR wavelengths

Y. Fang; D. Furniss; D. Jayasuriya; H. Parnell; Z.Q. Tang; D. Gibson; S. Bayya; J. Sanghera; A.B. Seddon; T.M. Benson

Optical Materials: X (May 2019)

(INVITED) Methods for determining the refractive indices and thermo-optic coefficients of chalcogenide glasses at MIR wavelengths

Y. Fang,
D. Furniss,
D. Jayasuriya,
H. Parnell,
Z.Q. Tang,
D. Gibson,
S. Bayya,
J. Sanghera,
A.B. Seddon,
T.M. Benson

Affiliations

Y. Fang: Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research, Faculty of Engineering, University of Nottingham, University Park, NG7 2RD, Nottingham, UK; Now Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, Collaborative Innovation Center for Optoelectronic Science and Technology, And Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518060, People's Republic of China
D. Furniss: Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research, Faculty of Engineering, University of Nottingham, University Park, NG7 2RD, Nottingham, UK
D. Jayasuriya: Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research, Faculty of Engineering, University of Nottingham, University Park, NG7 2RD, Nottingham, UK; Now at ThorLabs, 1 St. Thomas Place, Ely, CB7 4EX, UK
H. Parnell: Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research, Faculty of Engineering, University of Nottingham, University Park, NG7 2RD, Nottingham, UK; Now at Granta Design Ltd. (Materials Intelligence), Rustat House, 62, Clifton Rd, Cambridge, CB1 7EG, UK
Z.Q. Tang: Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research, Faculty of Engineering, University of Nottingham, University Park, NG7 2RD, Nottingham, UK
D. Gibson: Naval Research Laboratory, Washington, DC, 20375, USA
S. Bayya: Naval Research Laboratory, Washington, DC, 20375, USA
J. Sanghera: Naval Research Laboratory, Washington, DC, 20375, USA
A.B. Seddon: Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research, Faculty of Engineering, University of Nottingham, University Park, NG7 2RD, Nottingham, UK
T.M. Benson: Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research, Faculty of Engineering, University of Nottingham, University Park, NG7 2RD, Nottingham, UK; Corresponding author.

Journal volume & issue: Vol. 2

Abstract

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Chalcogenide glasses have attracted much attention for the realization of photonic components owing to their outstanding optical properties in the mid-infrared (MIR) region. However, relatively few refractive index dispersion data are presently available for these glasses at MIR wavelengths. This paper presents a mini review of methods we have both used and developed to determine the refractive indices and thermo-optic coefficients of chalcogenide glasses at MIR wavelengths, and is supported by new results. The mini review should be useful to both new and established researchers in the chalcogenide glass field and fields of MIR optics, fiber-optics and waveguides. Three groups of methods are distinguished: (1) spectroscopic ellipsometry, (2) prism-based methods, and (3) methods using Fourier transform infrared (FTIR) transmission data. The mini review is supported by a brief discussion of refractive index models. Keywords: Refractive index dispersion, Thermo-optic coefficient, Chalcogenide glass

Published in Optical Materials: X

ISSN: 2590-1478 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: https://www.journals.elsevier.com/optical-materials-x

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