Ge Germanium
Germanium
(
Ge
)| Eigenschaften | |
| Transmission Range | 1.85 - 23 µm (thickness 2 mm) |
| Refractive Index | 4.104147 @633nm |
| Reflection Loss | 36.04% @10 µm |
| Density | 5.327 g/cm3 |
| Melting point | 938.25°C |
| Molecular Weight | 72.59 |
| Thermal Conductivity | 58.61 W/(m·K) |
| Spec. Heat Capacity | 310 J/(kg·K) (@0°...100°C) |
| Thermal Expansion | 5.9 · 10-6/K @293K |
| Hardness (Mohs) | 800 |
| Young's Modulus | 102.7 <100> GPa |
| Shear Modulus | 67 GPa <100> nbsp] |
| Bulk Modulus | 77.2 GPa |
| Rupture Modulus | 110 MPa |
| Elastic Coefficient | C11 = 129; C12 = 48.3; C44 = 67.1 GPa |
| Dielectric Constant | 16.6 @f = 9.37 GHz |
| Solubility in Water | insoluble |
| Crystal Structure | single crystal, synthetic |
| Crystal Type | cubic, diamond structure, a = 5.62 Å |
| Cleavage Planes | (111), not perfect |
| Poisson Ratio | 0.2 |
| Application | lenses, band pass filters, thermography, ATR Crystals, IR optics |
| Remarks | relatively inert, DLC Coating possible, max. Temp. 100°C |
| Remarkable |
|
Ge – Germanium: Korth Kristalle - Vom Rohkristall zur hochpräzisen Optik. Durchblick für alle Wellenlängen - Seit 72 Jahren züchten wir Kristalle und fertigen daraus hochpräzise optische Komponenten für alle Wellenlängen vom IR- bis zum VUV-Bereich. Unsere Produkte kommen in allen Bereichen zum Einsatz, in denen eine hochentwickelte, präzise technische Ausstattung unerlässlich ist – von der Analytik bis hin zur Medizin- und Raumfahrttechnik.
Contact/Inquiry
Korth Kristalle
Am Jägersberg 3
24161 Altenholz
+49 (0)431 - 36 90 50
+49 (0)431 - 36 90 525
Remarkable
- Very high refractive index and reflectivity
- Application as an ATR crystal in the field of IR spectroscopy
- Relatively stable both chemically and mechanically
- Diamond like coatings (DLC) increase the transmission and also the chemical and mechanical resistance
- Maximum application temperature at approx. 80 ° C
Transmission spectrum 10mm