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Proceedings Paper

Measurement of chalcogenide glass optical dispersion using a mid-infrared prism coupler
Author(s): Hong A. Qiao; Norm C. Anheier; J. David Musgrave; Kathleen Richardson; Daniel W. Hewak
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Paper Abstract

Physical properties of chalcogenide glass, including broadband infrared transparency, high refractive index, low glass transition temperature, and nonlinear properties, make them attractive candidates for advanced mid-infrared (3 to 12 μm) optical designs. Efforts focused at developing new chalcogenide glass formulations and processing methods require rapid quantitative evaluation of their optical constants to guide the materials research. However, characterization of important optical parameters such as optical dispersion and thermal coefficient remains a slow and costly process, generally with limited accuracy. The recent development of a prism coupler at the Pacific Northwest National Laboratory (PNNL) now enables rapid, high precision measurement of refractive indices at discrete wavelengths from the visible to the mid-infrared. Optical dispersion data of several chalcogenide glass families were collected using this method. Variations in the optical dispersion were correlated to glass composition and compared against measurements using other methods. While this work has been focused on facilitating chalcogenide glass synthesis, mid-infrared prism coupler analysis has broader applications to other mid-infrared optical material development efforts, including oxide glasses and crystalline materials.

Paper Details

Date Published: 20 May 2011
PDF: 10 pages
Proc. SPIE 8016, Window and Dome Technologies and Materials XII, 80160F (20 May 2011); doi: 10.1117/12.884320
Show Author Affiliations
Hong A. Qiao, Pacific Northwest National Lab. (United States)
Norm C. Anheier, Pacific Northwest National Lab. (United States)
J. David Musgrave, Clemson Univ. (United States)
Kathleen Richardson, Clemson Univ. (United States)
Daniel W. Hewak, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 8016:
Window and Dome Technologies and Materials XII
Randal W. Tustison, Editor(s)

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