Material | BK7, UV FS |
S1/S2 Surface Quality | 20-10 scratch & dig (MIL-PRF-13830B) |
Clear Aperture | >85% |
S1/S2 Surface Irregularity | λ/10 @ 633 nm |
S1 (curved) Surface Radius Tolerance | ± 1% |
Diameter tolerance | +0.00, -0.12 mm |
Thickness tolerance | ±0.2 mm |
EKSMA Optics Plano-Concave Laser Windows
181.98 kB |
We offer two substrate materials, spanning a range of thermal expansion coefficients. For applications in which thermal shock is absent and thermal stability is not critical, BK7 glass is a suitable and inexpensive material. For applications requiring high thermal stability or involving severe thermal shock, you should choose windows made of UV grade fused silica.
BK7 and UV FS substrates can be supplied coated and used as laser mirrors. Please choose from our wide range of coatings and send us a request for custom product.