Material CaF2 (Calcium Fluoride)

Crystaltechno Ltd. manufactures from CaF2 (Calcium Fluoride) the following optics: blanks, windows, plates, polished domes, prisms, wedges and lenses. These products are used for infrared applications.
This material has found wide use in high power laser optics due to its low absorption. Polished surfaces are stable and will last several years under normal conditions. Due to its low refractive index, Calcium Fluoride can be used without anti-reflection coating. Calcium fluoride is grown by vacuum Stockbarger technique. Material for IR use is grown using naturally mined fluorite, in large quantities at relatively low cost.

Crystaltechno Ltd. grows calcium fluoride CaF2 crystals and produces CaF2 optics with diameter up to 380 mm, thickness 70 mm. We offer manufacture of CaF2 blanks, CaF2 windows, CaF2 prisms, CaF2 polished domes and CaF2 lenses.

Spectral Transmittance of CaF2 UV Uncoated Polished Window thickness 1mm for ranges (200 - 1100) nm and (2.5 - 25) micron.

Crystaltechno Ltd. offers the manufacturing of of CaF2 (calcium fluoride) optics (in detail please see Catalog)

Perhaps you will find required CaF2 (calcium fluoride) optics at our stock, please see item Optical Crystals.


  Transmission Range   0.13 to 10 microns  
  Refractive Index   1.39908 at 5 microns  
  Reflection Loss   5.5% at 5 microns (2 surfaces)  
  dn/dT   -10.6 x 10-6/°C  
  Density   3.18 g/cm3  
  Melting Point   1360 °C  
  Thermal Conductivity   9.71 W/(m*K)  
  Thermal Expansion   18.5 x 10-6/°C  
  Hardness   158.3 kg/mm2 (100)  
  Specific Heat Capacity   854J/(kg K)  
  Dielectric Constant   6.76  
  Young's Modulus (E)   75.8 GPa  
  Shear Modulus (G)   33.77 GPa  
  Bulk Modulus (K)   82.71 GPa  
  Elastic Coefficients   C11=164 MPa, C12=53 MPa,
C44=33.7 MPa
  Apparent Elastic Limit   36.54 MPa  
  Poisson Ratio   0.26  
  Solubility   0.0017g/100g water at 20 °C  
  Molecular Weight   78.08  
  Class/Structure   Cubic (111) cleavage  


  Wavelength, µm 0.19 0.21 0.25 0.33 0.41 0.88  
  Refractive Index 1.51 1.49 1.47 1.45 1.44 1.43  
  Wavelength, µm 2.65 3.90 5.00 6.20 7.00 8.22  
  Refractive Index 1.42 1.41 1.40 1.38 1.36 1.34  

Maximum available size: 380 mm Dia x 70 mm Thk


Plano-Convex Lenses
Bi-Convex Lenses
Bi-Concave lenses
Cylinder Lenses
Right Angle Prisms
Dispersion prisms
Polished Domes

Large CaF2 Calcium Fluoride growth ingots

CaF2 Calcium Fluoride and BaF2 Barium Fluoride growth ingots

Ordering Info
  (c) Crystaltechno Ltd. Vernadskogo 113-106, Moscow 119571, Russia
+7 (495) 234-5951, 234-5952, 956-7610
fax +7 (495) 433-1551
Site suggestions: webmaster@crystaltechno.com