Diameter: 68.00mm +/- 0.10mm
Thickness: 1.50mm +/- 0.05mm
Parallelism: < 1 Arc Minute
Edge Bevels: Light Protective Bevel, Both Edges
Transmitted Wavefront Error: 2.0 Microns Maximum
Peak to Valley @ 633nm
Surface Quality: 40-20 Per MIL-PRF-13830, Both Faces
Surface Roughness: 5.0nm RMS Maximum, Both Faces
Material Type / Quality: Sapphire, Optical Grade
Crystallographic Orientation: c-Plane
Coating: None, Not Required