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Optical Grade Germanium Blanks

Product Description



Product Attribute

Application

Using in manufacture Various type of Optical Grade Germanium Coated Lens

Absorption Coefficient10.6μm,cmˉ1):

≤0.03

Diameter(mm) 

12mm-380mm

Modulus of RuptureMPa):

≥75

Length(mm)

According to Customer Demand

Hardnesskg/cm2):

800

Resistivity

1-50Ω, ≥50Ω

Densityg/cm3):

5.33

The Inhomogeneity of Resistivity

10%

Young’s ModulusGpa):

103

Orientation Index

111

Poisson Ratio

0.28

Orientation deviation

0.5o

Thermal ConductivityWm-1k-1):

59

Conductivity Type

N Type

Coefficient of Thermal Expansion10ˉ6/ˉ1):

6.1

Refractive Index10μm):

4.0026

Specific heat Cal/(g.k)

0.074

Refractive Index Homogeneity

<1×10-4

Melting Point):

937

Temperature Coefficient of Refractive Index10.6μm,10ˉ6/ˉ1):

400

Permittivity:

16


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