Calcium Fluoride (CaF2) is a tetragonal positive birefringent crystal.MgF2 has good chemical,mechanical and thermal characteristics compared with CaF2.Due to its high vacuum UV transmission and high damage threshold,MgF2 is usually used in VUV andexcimer laser windows,polarizers, lenses and etc.
Item No :
CaF2 MaterialProduct Origin :
FuZhouProperties:
Transmission range: | 170 nm~7775 nm |
Dimensional Tolerance: | 18.85X10-6/K |
Density: | 3.18 g/cm3 |
Specifications:
Diameter Tolerance: | +0.0, -0.1mm |
Thickness tolerance | ±0.2mm |
Clear aperture: | >80% (Small Size); >90% (Large Size) |
Parallelism: | <1 arc min (General); <10 arc sec (High Precision) |
Surface quality: | 80/50 (General); 40/20 (High Precision) |
Flatness: | λ/2 (General); λ/8 (High Precision) |
Coating: | Coating upon Request |
Why choose Calcium Fluoride (CaF2) Material?
Calcium fluoride (CaF₂) is a single-crystal material valued for its exceptional optical properties, renowned for broad-band transparency and low dispersion in precision optics. Its crystalline structure enables high transmission from ultraviolet to mid-infrared, combined with low thermal expansion and strong chemical stability, ensuring consistent performance in extreme temperatures or corrosive environments. With resistance to laser damage and low optical loss, CaF₂ is widely used in UV lithography optics, IR spectrometer prisms, and laser system windows/lenses, particularly suited for applications requiring low dispersion and broad-band transmission.