Requirements
Product  | Specification/mm  | 
Yb(5 +/-0.1 at.%):CaF2  | Diameter: 12.7 mm +0/-0.1 mm Clear aperture: 11.4 mm diameter, central area Length: 3.5 mm +0.2/-0 mm  | 
Process Indicators
- Yb(5 +/-0.1 at.%):CaF2 material
 - Diameter: 12.7 mm +0/-0.1 mm
 - Clear aperture: 11.4 mm diameter
 - Central area Length: 3.5 mm +0.2/-0 mm
 - Orientation: [111] cut +/-0.5 deg
 - Surface quality, S1/S2: 80-50 S-D, inspection polished
 - Transmitted WFD: <L/2 @ 633 nm over clear aperture (target <L/4)
 - Perpendicularity error: <15 arcmin
 - Parallelism error <5 arcmin
 - Protective chamfers
 - Uncoated
 
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