Description:
Germanium (Ge) is widely used in far infrared wavelength, It is transparent from 2 micron to 17 mivron,
Germanium also has higher refractive index about 4 at 10.6 micron. Germanium is very popular in FLIR
and imaging applications.
Properties:
Transmission range:2000nm-17000nm
Density:5.33g/cm3
Thermal Expansion coefficient:5.5*10-6/K
Specification:
Name | Optical Ge Window |
Diameter Tolearance | +0.0/-0.02mm |
Thickness tolearance | +/-0.1mm |
Clear aperture | > 90% |
Parallelism | <1 arc min |
Surface quality | 40/20 |
Flatness | λ/4 |
Coating | Upon your request |