A Brewster window is a special optical window designed based on the principle of the Brewster angle. When P-polarized light is incident at the Brewster angle, its theoretical reflectivity is zero, allowing complete transmission, while S-polarized light is partially reflected. Its core function is to serve as the output coupler for high-power laser resonators while enabling nearly lossless output for specific polarized light.
Naturally generates linearly polarized light
High damage threshold and low thermal effects
Fixed output coupling rate
| Material | UV Fused Silica |
| Diameter Tolerance | +0.00,-0.10 mm |
| Thickness Tolerance | ±0.2mm |
| Parallelism | ≤5 arcsec |
| Transmitted Wavefront Error | <λ/10 |
| Surface Quality | 20-10 S/D |
