CUSTOMIZED
Diameter: 25.4 mm +0/-0.1 mm
Thickness: 3 mm +/-0.1 mm
Clear Aperture: min. 20 mm centered
Surface Quality, S1/S2: 20/10 S/D over CA MIL-PRF-13830B
Surface Flatness, S1: <λ/10 @633 nm over any 8 mm dia within CA
Surface Flatness, S2: <λ/10 @633 nm over any 8 mm dia within CA
Parallelism: <5 acmin
Protective chamfers: 0.2-0.4 mm x 45°
Chips: 0.2 mm
Coatings (IBS):
S1: (arrow marks) HRs>99.5% @ 257.5 nm + HTp>98% @ 515 nm, AO=45 deg
S2: ARp<0.1% @ 515 nm, AOI=45 deg
