Material: Germanium For IR Optics.
- 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.
Optical Properties
| 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 |
Material Properties
| Crystalline Form | Monocrystalline; Polycrystalline |
|---|---|
| Purity | ≥ 99.999% |
| Resistivity, Ohm•cm | 1÷5; 5÷40 |
| Orientation | [111] ± 2º; [100] ± 2º |
| Conductivity Type | N |
General Specifications
| Quality Parameters (Measurements) | Mono- IR |
|---|---|
| Orientation | [111] , [100] |
| Conductivity type | N |
| Dopant | Sb |
| Resistivity (r), Ohm×сm | Standard 5-40, other by customer request |
| Density (EPD) см-2 | 105 |
| Diameter, mm | 7.5-400 |
| Length, mm | 30 min |
| Special requirements | Optical characteristics according to requirements |
In Form of Granules
| Quality parameters | Analysis |
|---|---|
| Size, mm | 3-6 |
| Chemical purity, sum, not less than, % weight | 99,999 |
| (impurities Fe, Mn, Cu, Ni, Co, Ga, Al, Mg) |
In Form of Gray Powder
| Quality parameters | Analysis | Methods of analysis |
|---|---|---|
| Germanium content, not less than, % | 99,5 | Photocolorimetry |
| GeO2 content, max, % weight | 0,5 | Photocolorimetry |
| Chemical purity, sum, not less than, % weight (impurities Fe, Mn, Cu, Ni, Co, Ga, Al, Mg) | 99,999 | Emission Spectroscopy |
| Grain size, mm | 10-50 | Laser Ultramicroscopy |