Dielectric Mirrors

Specifications General Precision High Precision
Material BK7, Fused Silica or others

Dimension Tolerance +/-0.2mm +/-0.05mm
Clear Aperture >85% >90%
Flatness  λ/4@632.8nm  λ/8@632.8nm 
Surface Quality 60-40 20-10
Parallelism 3 arc min 3 arc sec
Bevel 0.25mm x 45°
Coating HR @ design wavelength just on one surface, fine ground on the other surface, with AOI=0° or 45°

Note: Any sizes and material are available upon request.