Bidirectional reflectance distribution function of germanium at 3.39 um

Karen J. Sorensen; Tony L. Roe

doi:10.1117/12.22664

1 December 1990 Bidirectional reflectance distribution function of germanium at 3.39 μm

Karen J. Sorensen, Tony L. Roe

Proceedings Volume 1331, Stray Radiation in Optical Systems; (1990) https://doi.org/10.1117/12.22664
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

Bidirectional reflectance distribution function (BRDF) measurements were made on single crystal, multicrystalline, and polycrystalline germanium (Ge). The multicrystalline substrate is a newly developed form of germanium that contains a few large crystals and has a structure that is more uniform than the polycrystalline material. Measurements were made with a helium neon laser operating at 3.39 microns with a 100 angle of incidence. The BRDF of the multicrystalline material more closely resembles that of the single crystal material than it does the polycrystalline material. The bulk material of the polycrystalline germanium scatters more than that of the single crystal germanium, and therefore has more effect on total sample BRDF.

Citation Download Citation

Karen J. Sorensen and Tony L. Roe "Bidirectional reflectance distribution function of germanium at 3.39 μm", Proc. SPIE 1331, Stray Radiation in Optical Systems, (1 December 1990); https://doi.org/10.1117/12.22664

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