Description

Calcium Fluoride is used for optical windows, lenses and prisms in the 0.*5 ÃŽÂ&frac*4;m - 9 ÃŽÂ&frac*4;m range. 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 Stockbroker technique. Material for IR use is grown using naturally mined fluorite, in large quantities at relatively low cost. Specifications: Material: Calcium Fluoride single crystal Diameter Tolerance: *0.0, *0.1mm Thickness Tolerance: +/*0.2mm Clear Aperture: >*0% Parallelism: 1 arc minute Flatness: l/2 at **2.8 nm Surface quality: ****0 scratch and dig Bevel: Protective Bevel Please contact Antek Optics sales for detail.