CUSTOMIZED
Substrate material: UVFS (Corning 7980 0F)
Diameter: 25.4 mm (+0/-0.1 mm)
Edge Thickness: 6.35 mm (+/-0.1 mm)
Center thickness: 6.22 mm [ref.]
Clear aperture: min. 20 mm centered
Radius of curvature, concave S1: ROC= -600 mm +/-1%
Radius of curvature, S2: FLAT
Surface quality, S1: 20-10 S-D over CA (MIL PRF13830B)
ROC tolerance: +/-1%
Surface irregularity, S1: λ/8 @ 633 mm over CA
Centration: < 3 arcmin
Protective chamfers: 0.2-0.4 mm x 45°
Chips: <0.2 mm stoned
Coatings (IBS):
S1 (arrow mark): HR>99.9% @ 515 nm, AOI=0°
S2: uncoated
Optimized for enhanced lifetime under following irradiation conditions: 515 nm, 15-20 W avg power, 2-3 ps, 1 kHz, beam dia. (1/e2) 2.5-3.5 mm gaussian, air environment.
