| Model Number: | Germanium |
|---|---|
| Brand Name: | crysmit |
| Place of Origin: | China (Mainland) |
Quick Details
Specifications
Main Properties
|
Crystal Type
|
Cubic
|
|
Lattice Parameter
|
a=5.657?
|
|
Transmission Band
|
2-12 um
|
|
Mohs Hardness
|
6.3
|
|
Density
|
5.33g/cm3
|
|
Melting Point
|
937 ℃
|
|
Refractive Index
|
4.0032 at 10.6um
|
|
Resistivity
|
5-40 ohm-cm
|
|
Young's Modulus
|
103 GPa
|
|
Thermal Expansion
|
6.1 x10-6/℃
|
|
Thermal Conductivity
|
167mcal /cm/s/k
|
Crysmit supply Ge widows and mirrors with:
|
Diameter
|
+0/-0.10mm
|
|
Length
|
+/-0.2mm
|
|
Chamfer
|
0.20+/-0.10mm @ 45°
|
|
Surface Figure (power/irregularity) at 0.63μm
|
1.0 fringe/0.5 fringe
|
|
Parallelism
|
< 40 arc Seconds
|
|
Perpendicularity
|
< 5 arc min
|
|
Surface Quality
|
40/20Scratch/Dig
|