Measuring The Homogeneity Of Infrared Materials

P. Kuttner; H. Schamberger

doi:10.1117/12.7972707

1 April 1981 Measuring The Homogeneity Of Infrared Materials

P. Kuttner, H. Schamberger

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Optical Engineering, Vol. 20, Issue 2, 202291 (April 1981). https://doi.org/10.1117/12.7972707

Abstract

An instrument to measure inhomogeneity of optical materials in the 3 to 5 um as well as in the 8 to 12 pm region is described. It measures the deviation caused by inhomogeneous areas when a light beam passes through. A line spread function is formed with an auxiliary lens, and in its slope a fixed measurement slit is positioned. Deviation caused by inhomogeneities will shift the spread function, and the measurement slit will detect variations in intensity. With this technique the gradient of the refractive index, as well as the variation of the refractive index, can be measured. Typical measurement results are shown.

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P. Kuttner and H. Schamberger "Measuring The Homogeneity Of Infrared Materials," Optical Engineering 20(2), 202291 (1 April 1981). https://doi.org/10.1117/12.7972707

Published: 1 April 1981

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KEYWORDS

Infrared materials

Refractive index

Optical testing

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