Optical Grade Germanium
Description
Optical Grade Germanium.
Optical Grade Germanium
Specifications |
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|---|---|
| Application Spectrum: | Infrared (IR) |
| Wavelength Range: | 2000-25000 nm |
Applications

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Frequently Asked Questions
Optical Grade Germanium conforms to manufacturing traceability, DIN EN ISO 286-2 (2010-11), ASME Y14.5M (2009), and MIL 130 standards.
Optical Grade Germanium is available in various shapes such as window blanks, mirror blanks, filter blanks, prism blanks, beamsplitter blanks, lens blanks, dome blanks, rods, disks, sputtering targets, and evaporation granules. The standard diameter is 10 to 330 mm, but larger sizes (max. 450 mm) are available upon request.
Optical Grade Germanium has a refractive index of 4.0140 (at 5.20 μm), dn/dT of 4.14 x 10-4/K (at 5.20 μm), and transmission of 46% (at 5.20 μm).
Optical Grade Germanium has a melting point of 1211.4 K, density of 5.323 g/cm3, thermal expansion coefficient of 5.7 x 10-6/K, Young's modulus of 155.6 GPa, and modulus of rupture of 72.4 MPa.
Optical Grade Germanium is a high-purity material used in infrared optics applications.