Diameter: 1.750″+/-.001″
Thickness: 0.039″+/-.001″
Parallelism: 5 Arc Seconds Maximum.
Edge Bevels: 0.016″ Maximum x 45 Degrees, Both Edges
Transmitted Wavefront Error: < 0.007um RMS @ 633nm
Surface Quality: 40-20 Per MIL-PRF-13830, Both Faces
Surface Roughness: < 15 Angstroms RMS, Both Faces
Clear Aperture: Central 1.400″ Minimum Diameter, Both Faces
Material Type / Quality: Sapphire, Optical Grade 1 or 2
See Drawing for Transmission Requirements
Crystallographic Orientation: c-Plane
Coating: None, Uncoated Substrate