Paper
20 May 2011 Measurement of chalcogenide glass optical dispersion using a mid-infrared prism coupler
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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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hong A. Qiao, Norm C. Anheier, J. David Musgrave, Kathleen Richardson, and Daniel W. Hewak "Measurement of chalcogenide glass optical dispersion using a mid-infrared prism coupler", Proc. SPIE 8016, Window and Dome Technologies and Materials XII, 80160F (20 May 2011); https://doi.org/10.1117/12.884320
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Cited by 11 scholarly publications.
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KEYWORDS
Prisms

Glasses

Refractive index

Chalcogenide glass

Mid-IR

Dispersion

Calibration

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