Material: UVFS (JGS1)
Diameter: 50.8 mm +0/-0.1 mm
Thickness: 9.52 mm +/-0.1 mm
Clear aperture: min 45 mm
Surface quality S1: 20-10 S-D as per MIL-PRF-13830B per CA
Roughness (RMS), S1: <5 ångström
Surface quality S2: commercial polish (80-50 S-D)
Surface flatness S1: <λ/10 @ 633 nm per CA
Surface irregularity S1: <λ/10 @ 633 nm per CA
Parallelism: <5 arcmin
Protective chamfers: 0.2–0.3 mm x 45 deg
Chips: <0.3 mm stoned
Coatings (IBS):
S1 (arrow marks): HRs>99.95% & HRp>99.9%@ 980 - 1080 nm, AOI=45 deg |GDD Rs|<30 fs^2@960-1100 nm, |GDD Rp|<30 fs^2@ 990-1070 nm
S2: SCC
