CUSTOMIZED
Substrate material: UVFS
Diameter: 25.4 mm (+0/-0.1 mm)
Edge thickness: 6.0 mm (+/-0.2 mm)
Clear aperture: >90%
Surface quality, S1: 20-10 S-D per CA
Surface quality, S2: 60-40 S-D (polished)
Surface irregularity, S1: <λ/6 @ 633 nm per CA
Radius of curvature, S1: ROC=-1500 mm +/-2%
Centration error: <5 arcmin
Protective chamfers: 0.1 - 0.3 mm x 45°
Coatings (IBS):
S1 (concave): HRsp_abs>99.9%@980 nm - 1080 nm, AOI=0 – 10°
GDD constant -25 fs^2 +/-20 fs^2 @ 980 nm - 1080 nm
S2: Uncoated, polished
LDT: >200 mJ/cm2, 50 fs, S-on-1
