Trade-Offs Using Poly Versus Monocrystalline Germanium For Infrared Optics

L. Van Goethem; L. Ph. Van Maele; M. Van Sande

doi:10.1117/12.936432

19 December 1986 Trade-Offs Using Poly Versus Monocrystalline Germanium For Infrared Optics

L. Van Goethem, L. Ph. Van Maele, M. Van Sande

Proceedings Volume 0683, Infrared and Optical Transmitting Materials; (1986) https://doi.org/10.1117/12.936432
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

For infrared optics the use of poly- versus monocrystalline Germanium is often questioned. Although MTF seems marginally sensitive to distinguish between both types of material, detailed transmission and absorption measurements indicate optical effects correlated with grain boundaries. In this paper the results of recent measurements on currently available material are presented. Special attention is paid to analyse optical phenomena at grain boundaries as well as their origin. Finally, a definition of "optical" monocrystalline Germanium based on crystallographic data will be given.

Citation Download Citation

L. Van Goethem, L. Ph. Van Maele, and M. Van Sande "Trade-Offs Using Poly Versus Monocrystalline Germanium For Infrared Optics", Proc. SPIE 0683, Infrared and Optical Transmitting Materials, (19 December 1986); https://doi.org/10.1117/12.936432

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