The refractive index of a germanium prism was measured by two different laboratories for wavelengths in the 8–14-µm range. The sample was a single crystal of known purity and growth history. Index results from the two experiments agreed to within 0.0003 in agreement with the uncertainty analysis presented.
© 1978 Optical Society of America
R. P. Edwin, M. T. Dudermel, and M. Lamare, "Refractive index measurements of a germanium sample," Appl. Opt. 17, 1066-1068 (1978)