Calcium Fluoride (CaF2) Windows

  • Calcium fluoride (CaF2) has useful transmission over the spectral range from 0.2 to 8.0 microns
  • UV and IR grade CaF2 windows are popular choice for specroscopic and thermal imaging applications
  • CaF2 windows have high damage threshold and can be used as mirror substrates for UV laser systems

Calcium fluoride windows have a wide transmission range and can be used in ultraviolet, visible and infrared applications.

Due to its composition CaF2 (Calcium Fluoride) has much longer useful life than most materials when used in a fluorine environment.

 

Calcium Fluoride (CaF2) mirrors, prisms, beamsplitters and beam selectors are available upon request.

Delivery

Estimated delivery time: from 4 - 5 days

Diameter
Thickness
Substrate

CaF2 Windows UV Grade

Code Diameter Thickness Substrate Price Delivery Add to cart
530-6251 ø 25,4 mm 1 mm UV grade CaF2 105 $ 4 - 5 days To cart
530-6252 ø 25,4 mm 2 mm UV grade CaF2 84 $ 4 - 5 days To cart
530-5253 ø 25,4 mm 3 mm UV grade CaF2 106 $ Request To cart
530-5385 ø 38,1 mm 5 mm UV grade CaF2 209 $ Request To cart
530-5506 ø 50,8 mm 6 mm UV grade CaF2 341 $ 4 - 5 days To cart

CaF2 Windows IR Grade

Code Diameter Thickness Substrate Price Delivery Add to cart
530-6253 ø 25,4 mm 3 mm IR grade CaF2 93 $ Request To cart
530-6385 ø 38,1 mm 5 mm IR grade CaF2 109 $ 4 - 5 days To cart
530-6506 ø 50,8 mm 6 mm IR grade CaF2 193 $ 4 - 5 days To cart
530-6710 ø 70 mm 10 mm IR grade CaF2 253 $ 4 - 5 days To cart
530-6756 ø 70 mm 6 mm IR grade CaF2 330 $ Request To cart

IR Grade CaF2 Protective Windows for Spectroscopy Applications

Code Diameter Thickness Substrate Price Delivery Add to cart
530-6121 ø 12 mm 1 mm IR grade CaF2 6 $ 4 - 5 days To cart
Delicious

Physical Properties

Crystal Type cubic
Density, g/cm3 3.18
Melting point, °C 1418
Refractive index @ 1.0 µm n=1.4289
Transmission band, µm 0.125-10
Lattice constant, A a=5.462

 

Specifications of CaF2 Windows

Material CaF2
Surface quality 40-20 scratch & dig (MIL-PRF-13830B)
Clear aperture 90%  of diameter
Diameter tolerance +0.0 -0.13 mm
Thickness tolerance ±0.2 mm
Parallelism 3 arcmin
Flatness λ/4 @ 633 nm
Spectral range UV, VIS, IR


 IR grade CaF2 protective windows for spectroscopy application (optically polished)

Material CaF2
Surface quality 80-50 scratch & dig (MIL-PRF-13830B)
Clear aperture 90%  of diameter
Diameter tolerance +0.0 -0.13 mm
Thickness tolerance ±0.2 mm
Parallelism <10 arcmin
Flatness optically polished
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