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CaF2 (Calcium Fluoride)

CaF2CaF2 (Calcium Fluoride) has transmission range 0.19um to 7um. The refractive index varies from about 1.35 to 1.51 through this range. IR grade Calcium Fluoride is transparent up to 12um. Degradation due to moisture in the atmosphere is minimal, and polished surfaces may be expected to withstand several years exposure to normal atmospheric conditions. Due to its low refractive index, Calcium Fluoride can be used without an anti-reflective coating. Low solubility and wide transmission makes this material useful for many applications, including mirror substrates for UV laser systems, windows, lenses and prisms for UV and IR applications.


CaF2 Characteristics & Transmission Curve  


CaF2 Windows Specifications:


  Material

 CaF2

  Dimension Tolerance

 +0.0/-0.1mm

  Thickness Tolerance

 ±0.1mm

  Surface Accuracy

 λ/4@632.8nm

  Surface Quality

 60-40

  Parallelism

 <1'

  Clear Aperture

 >90%

  Bevel

 <0.25mm x45°

  Coating

 upon request


  CaF2 Windows_Standard Products


CaF2 Lenses Specifications:


  Material

 CaF2

  Design Wavelength

 587.6m

  Focal Length Tolerance

 ±1%

  Diameter Tolerance

 +0.0/-0.1mm

  Thickness Tolerance

 ±0.1mm

  Surface Accuracy

 λ/2@632.8nm

  Surface Quality

 80-50

  Centration

 <3'

  Clear Aperture

 >90%

  Bevel

 <0.2mmx45°

  Coating

 AR Coating


  CaF2 Lenses_Standard Products