High quality, uncoated windows for high power use in interferometry & quality testing; 30 ± 5 arc min wedge. These precisely polished uncoated flats are designed with a small wedge of 30 ± 5 arc minutes to minimize interference effects between the surfaces and reduce back reflection. Available from stock in N-BK7 or fused silica. Custom coatings, sizes, and substrate options are available upon request.
Product Code: IF
Optical Material: Standard Grade Corning 7980 1-D (Fused Silica) or N-BK7
Diameter Tolerance: +0/-0.25mm
Thickness Tolerance: ±0.25mm
Wedge Tolerance: 30 ±5 arc minutes
Chamfer: Ø ≤50.8mm: leg width 0.35mm at 45° nominal Ø > 50.8mm: 0.85mm leg width at 45°° nominal
Surface Quality: 10-5 scratch-dig per MIL-PRF-13830b
Transmitted Wavefront Error (TWE): < λ/10 p-v at 633nm