CUSTOMIZED
Material: UVFS (Corning 7980)
Diameter: 76.2 mm +0/-0.2 mm
Edge thickness: 12.5 mm +/- 0.2 mm
Center thickness: 10.07 mm ＋/-0.2 mm)
Clear aperture: Ring-shaped CA of width w=14.4mm centered at radius R=29mm (R＝28mm)
ROC S1 (concave): -300 mm +/-0.5%
Surface quality, S1: 20-10 S-D in clear aperture (after coating)
Surface irregularity, S1: <λ/8 @ 633 nm over clear aperture
Surface 2: commercial polish
Centration: <3 arcmin
Protective chamfer: 0.6 +/- 0.1 mm x 45°
Chip<1mm
Arrow engraved to S1
Coatings (IBS):
S1 (arrow marks, CV): HR>99.99% @ 970-1090 nm, AOI=0° (|GDDr| < 50 fs2 @ 980-1080 nm)
S2: uncoated
