26 December 1984 Refractive Index Measurements Of AMTIR-1 At Cryogenic Temperatures
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The refractive index of an infrared transmitting glass, AMTIR-1, has been measured at infrared wavelengths and cryogenic temperatures. Experimental data are presented for wave-lengths of 7-12 micrometers (pm) and for temperatures of 170-350K. The change in index with temperature, dn/dT, was determined as well. An overall accuracy in index of five parts in the fourth decimal place was achieved. In addition to results, the equipment, measurement procedures, and error estimates are also described.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael J. Nofziger, Michael J. Nofziger, William L. Wolfe, William L. Wolfe, } "Refractive Index Measurements Of AMTIR-1 At Cryogenic Temperatures", Proc. SPIE 0505, Advances in Optical Materials, (26 December 1984); doi: 10.1117/12.964636; https://doi.org/10.1117/12.964636

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