The diamond band gap is 5.47eV which has good transmission characteristics from vacuum ultraviolet (227nm) to far infrared and microwave (millimeter wave band) except for the absorption peak caused by phonon vibration at 3-5um. Coupled with excellent chemical inertia, wear resistance, extremely low coefficient of thermal expansion and high thermal conductivity, diamond has excellent thermal shock resistance. However, the thermal lens effect of diamond with low absorption coefficient, high laser damage threshold and high thermal conductivity is 200 times lower than that of ZnSe window. Low atomic number makes diamond almost transparent to X-rays.
As the production and processing of diamond window is extremely difficult, the specific parameters and processing requirements can be solved through negotiation.
Good optical transmittance, can be used as a window material for X-rays, infrared rays, etc.