Brewster Windows are uncoated substrates that can be used in series as polarizers, or to clean up a partially polarized beam. When positioned at Brewster’s Angle, the P-polarized component of the light enters and exits the window without reflection losses, while the S-polarized component is partially reflected. The graph to the right shows reflectance for both S- and P-polarization through UV fused silica at 633 nm. The 20-10 scratch-dig surface quality and λ/10 transmitted wavefront error of our Brewster windows make them an ideal choice for laser cavities.
Parameter
Basic Parameters
| Product ID | PA04014 |
| Material | BK7 Grade A, UV Grade Fused Silica |
| Dimension Tolerance | +0.0/-0.2mm |
| Thickness Tolerance | ±0.2mm |
| Surface Quality | 20/10 |
| Clear Aperture | >90% |
| Wavefront Distortion | <λ/10@633nm |
| Parallelism | <10 arc seconds |
| Chamfer | Protected<0.5mmx45° |
| Coating | None |
| Damage Threshold | >20J/cm2, 20ns, 20Hz, 1064nm |
Application
- Laser Cavity
Feature
- Zero reflection for p-polarization
- 20% reflectance for s-polarization
- Uncoated, high damage threshold
- Used in laser cavities
