Physical Properties
|
Crystal type |
cubic |
|
Density, g/cm3 |
5.33 |
|
Melting point, °C |
937 |
|
Refractive index @ 10.6 µm |
n = 4.0034 |
|
Transmission band, µm |
1.8-17 |
|
Lattice constant, Å |
a = 5.657 |
Specifications
|
Material |
Ge |
|
Surface quality |
60-40 scratch & dig (MIL-PRF-13830B) |
|
Clear aperture |
80% of diameter |
|
Diameter tolerance |
+0.0 -0.1 mm |
|
Thickness tolerance |
±0.2 mm |
|
Parallelism |
<3 arcmin |
|
Flatness |
<1.5 λ per inch @ 633 nm |
| EKSMA Optics Germanium Optical Components
63.11 kB |
- Wide IR transmission range covering 1.8-16 µm
- Opaque in visible range
Germanium (Ge) based optical components are widely used for IR applications. Germanium (Ge) is well suited for manufacturing of windows and lenses for IR applications in lasers and optical systems. Ge components are used with AR coatings because of high surface reflectivity of substrate. The high refractive index ensures an exceptional single wavelength performance for a best "best form" singlet constructed from germanium.
Related products
- Address: Dvarcioniu st. 2B LT-10233 Vilnius, Lithuania
- Phone: (+370) 5 272 99 00
- Fax: (+370) 5 272 92 99
- E-mail: info@eksmaoptics.com
