Germanium is a high index material that is used to manufacture Attenuated Total Reflection (ATR) prisms for spectroscopy. Its refractive index is such that Germanium makes an effective natural 50% beamsplitter without the need for coatings. Germanium is also used extensively as a substrate for production of optical filters. Germanium covers the whole of the 8-14 micron thermal band and is used in lens systems for thermal imaging. Germanium can be AR coated with Diamond producing an extremely tough front optic.
Specifications
Transmission Range
1.8 to 23 μm
Reflection Loss
5.3% @ 11μm (Two surfaces)
Absorption Coefficient
< 0.027 cm-1 @ 10.6 μm
Refractive Index
4.0026 @ 11 μm
Melting Point
936 °C
Hardness
Knoop 780
07072 서울시 동작구 신대방1가길 38 (신대방 719번지 동작상떼빌) 106동 209호 (주)원우시스템즈 TEL : 02-533-6720 FAX : 02-533-9614 Santevill 106-209, 38, Sindaebang1ga-gil, Dongjak, Seoul, 07072, South Korea
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