IR Materials and Optical Crystals

OHARA provides IR materials: germanium, silicon, & sapphire and optical crystals: CaF2, BaF2, & MgF2. 

IR Materials

Ohara Corporation now offers infrared materials including germanium, silicon, zinc sulfide, zinc selenide, and sapphire. The materials can be supplied in a large range of sizes and shapes including blank, polished, generated, and finished optics.

Optical Crystals

Optical crystals provided by Ohara Corporation include CaF2, BaF2, MgF2. These materials have a wide transmission range from 0.2um up to 13um and are suitable for many applications including laser-based optics, windows, and other general 


  • Transmission range (um): 0.13~10
  • Refractive index: 1.39895 at 5um
  • Density: 3.18 CTE: 24 x 10-6/C
  • Available in Blanks Up To 350 mm Diameter
  • For Use in Astronomical Telescopes and Excimer Lasers
  • Suitable for IR and UV Systems

Calcium Flouride (CaF2)