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  • Silicon Prism

  • Silicon Prism

  • Silicon Prism

Silicon Prism

Silicon Has Good transmission at 1-7um. It is widely used for 3-5um infrared windows and lens.

Product Details


Monocrystalline silicon is an infrared material with excellent cost performance.It can be divided into Transmissive Grade and Mirror Grade.As a transmittance material, ocZ-SI is widely used in the mid-infrared (1-6um) band, and the infrared transmittance is more than 50%. Monocrystalline silicon can be used in a wider band (1--14um), and high purity zonal fused monocrystalline silicon (HPFZ-Si) can even be used in the far infrared band (greater than 30um).

Silicon single crystal is also an excellent laser reflector material.Compared with other mirror materials such as copper and molybdenum, silicon single crystal is the preferred substrate material for CO2 laser mirrors due to its advantages of good thermal conductivity, excellent thermal stability, low thermal expansion coefficient, relatively low density, low cost, easy precision processing and so on.


Silicon Window












Refractive index range(20℃)

Wavelength(nm)Refractive index(n)Wavelength(nm)Refractive index(n)
13573.497540003.4257
1367.33.492642583.4245
1395.13.492945003.4236
1529.53.479550003.4223
1660.63.469655003.4213
1709.23.466460003.4202
1813.23.460865003.4195
1970.23.453770003.4189
2152.63.447675003.4186
2325.43.44380003.4184
2714.43.435885003.4182
30003.432100003.4179
3303.33.4297105003.4178
35003.4284110403.4176


Manufacture Specifications

Diameter3mm to 280mm
Diameter Tol.+0.00/-0.05
Surface Quality40-20 standard
Flatness1/10 lambda
Chamfer0.25mmx45degree
Wedge<1arcmin
Coating3-5um


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