Material: Germanium for IR optics.

Form of product:

- cylindrical (rods, plano blanks, windows);

- rectangular (blanks, windows)

- other (spherical generated blanks, with elements of aspheric).

Package: Termal package (vacuum sealing), then put into a wooden case or cartoon box.


Index of refraction 4.0048±0.0002 at 10.6 μm at 25ºC
Inhomogeneity of the index of refraction ≤ 2·10-4
Temperature coefficient of the index of refraction ≤ 4·10-4
Absorption coefficient, cm-1 0.03 см-1 max on λ= 10.6 μm under t=25ºC
Transmission 46% min at 4 μm, 45% min at 10.6 μm trough polished uncoated blank of 10 mm thickness

Crystalline form

Monocrystalline; polycrystalline

Purity ≥ 99.999%

Resistivity, Ohm•cm 1÷5; 5÷40

Orientation [111] ± 2º; [100] ± 2º

Conductivity Type N