Silicon Mirrors

The rich abundance of silicon in nature and its minimum toxic property is a distinct commercial advantage over other synthetic materials. They comprise thermal stability, high durability and low costs. The mechanical strength and fracture properties are important for the structural aspect of the optical system.

Our mirrors are coated for maximum reflectivity. PLEIGER’s manufacturing capability covers optics for CO2-lasers and optical instruments.

Silicon mirrors are available plano and spherical.



Do you need more information? Please contact us.

+49 2324 398401

Silicon Properties / Standard Specifications / Options

Electrical Properties

Electrical resistivity ( M Ω m ): 6*

Temperature coefficient ( K-1 ): – 0.7*

Physical Properties

Density ( g cm-3 ): 2,33

Melting point ( °C ): 1410

Thermal Properties

Thermal conductivity @23 °C ( W m-1 K-1 ): 163


*depends strongly on impurities

Dimensional tolerances:

Diameter: +/- 0,1 mm

Thickness: +/- 0,2 mm

Paralleslism: < 3 arc min

Clear aperture: 90 % of diameter

Surface Quality:

S-D: 40-20

Figure: 1/40 wave at 10,6 µm

Surface form

– plano

– spherical


– Coatings [more]

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