Material |
BK7, UV FS |
Surface quality |
20-10 scratch & dig (MIL-PRF-13830B)
|
Wavefront distortion |
λ/10 @ 633 nm |
Clear aperture |
90% of diameter |
Parallelism |
< 10 arcsec |
Axis tolerance |
+0.00, -0.12 mm |
Thickness tolerance |
±0.2 mm |
EKSMA Optics Brewster Windows
129.6 kB |
Brewster window polarizer is used in the laser cavity to transmit 100% of p-polarized component without reflection losses and to introduce losses for s-polarized component.
Total reflection of s-polarized component from the Brewster window is up to 22 % for UVFS and up to 26% for N-BK7 at 1064 nm.