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Measuring temperature-dependent refractive index coefficient (dn/dT) of the IR Chalcogenide glass in LWIR using a Twyman-Green Interferometer

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Abstract

The dn/dT of the IR Chalcogenide glass is measured in LWIR by using a Twyman-Green Interferometer. The measured sample is a round disk with parallel optically flat surfaces. The results are provided from -53°C ~32°C.

© 2019 The Author(s)

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