Material
|
UV grade Fused Silica or BK7 glass
|
S1 Surface Irregularity
|
λ/10 at 633 nm
|
S1 Surface Quality
|
20-10 scratch & dig (MIL-PRF-13830B)
|
S2 Surface Quality
|
Commercial polish
|
Diameter Tolerance
|
+0.00 mm-0.12 mm
|
Thickness Tolerance
|
±0.25
|
Chamfer
|
0.3 mm at 45° typical
|
Coating
Technology
|
Electron beam multilayer dielectric
|
Adhesion and Durability
|
Per MIL-C-675A. Insoluble in lab solvents
|
Clear Aperture
|
Exceeds central 85% of diameter
|
Angle of Incidence
|
0-8° (normal)
|
Coating | Hard dielectric High reflection R>99.0% |
Laser Damage Threshold | >100 mJ/cm2, 50 fsec pulse, 800 nm typical |
EKSMA Optics Femtoline Broadband Laser Rear Mirrors
91.73 kB |
High reflectivity dielectric coatings with high laser damage threshold are applied on laser rear mirrors. UVFS substrates are recommended for high power laser applications. Back side can be AR coated to avoid back reflection from second surface on request.