Material
|
UV grade fused silica
|
S1 Surface Flatness
|
λ/10 typical at 633 nm
|
S1 Surface Quality
|
20-10 scratch & dig (MIL-PRF-13830B)
|
S2 Surface Flatness
|
λ/10 typical at 633 nm
|
S2 Surface Quality | 20-10 scratch & dig (MIL-PRF-13830B) |
Diameter Tolerance
|
+0.00 mm -0.12 mm
|
Thickness Tolerance
|
±0.25 mm
|
Parallelism
|
30 arcsec
|
Chamfer
|
0.3 mm at 45° typical
|
Technology
|
Ion Beam Sputtering (IBS)
|
Coated Surface Flatness
|
λ/8 at 633 nm over 80% of diameter
|
Transmitted Wavefront Distortion (TWD)
|
λ/10 over clear aperture
|
Back Side Antireflection Coated | AOI 45°, R<0.5%, (s+p)/2 AOI 0°, R<0.1% |
Laser damage threshold
|
>10 J/cm2, 8 ns pulse, 1064 nm
|
EKSMA Optics Harmonic Separators with High Transmission
133.5 kB |