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Proceedings Paper

Trade-Offs Using Poly Versus Monocrystalline Germanium For Infrared Optics
Author(s): L. Van Goethem; L. Ph. Van Maele; M. Van Sande
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Paper 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.

Paper Details

Date Published: 19 December 1986
PDF: 6 pages
Proc. SPIE 0683, Infrared and Optical Transmitting Materials, (19 December 1986); doi: 10.1117/12.936432
Show Author Affiliations
L. Van Goethem, Metallurgie Hoboken-Overpelt (Belgium)
L. Ph. Van Maele, Metallurgie Hoboken-Overpelt (Belgium)
M. Van Sande, Metallurgie Hoboken-Overpelt (Belgium)

Published in SPIE Proceedings Vol. 0683:
Infrared and Optical Transmitting Materials
Robert W. Schwartz, Editor(s)

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