0481084

Specifications

Coating material

Germanium

Purity

99.999%

Form

Granulate

Dimensions

0.7 – 3.5 mm

Quantity

500 g

Theoretical density at 20°C

5.4 g/cm3

Melting point

938 °C

Temperature at vapor pressure

10-2 mbar

1360 °C

10-1 mbar

1520 °C

Boiling point

2833 °C

Type of evaporation

Melting

Good

Evaporation source (typically)

E-gun

Directly from Cu crucible

Good

Liner material

W

Good

Mo

Good

Boat

Boat material

W

Possible

Specific evaporation conditions

Preparation of base melt (premelt)

Good

Low residual pressure

Good

Substrate temperature range

100 - 200 °C

Good

Film transparency

Low

1.7 µm

High

23 µm

Film refractive index n / extinction coefficient k

at 550nm

n

~ 4.3-4.4 (1.7 µm)

at 10 µm

k

~ 4.0-4.1 (10 µm)

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