Ideal for Laser Cavities
p-polarized light transmitted without loss
λ/10 transmitted wavefront distortion
10-5 Scratch-Dig
Our Brewster windows are made of UV grade fused silica with laser grade surface quality and parallelism, making them ideal polarizers for use inside a laser cavity.
| Model | Description | Availability | Price | Qty. | |
|---|---|---|---|---|---|
| BQW-1 | Brewster Window, Minor: 12.5 mm, Major: 22.11 mm, 2.0 mm thick | Contact Sales | ||
| BQW-2 | Brewster Window, Minor: 25.0 mm, Major: 44.21 mm, 2.0 mm thick | Contact Sales |
When oriented at Brewster\'s angle (55.57°), s-polarized light is partially reflected, p-polarized light is transmitted without loss. When placed inside a laser cavity Brewster windows cause p-polarized light to have higher effective gain, resulting in the laser\'s final output being strongly p-polarized.
UV Grade Fused Silica is synthetic amorphous silicon dioxide of extremely high purity providing maximum transmission from 195 to 2100 nm. This non-crystalline, colorless silica glass combines a very low thermal expansion coefficient with good optical qualities, and excellent transmittance in the ultraviolet region. Transmission and homogeneity exceed those of crystalline quartz without the problems of orientation and temperature instability inherent in the crystalline form. It will not fluoresce under UV light and is resistant to radiation. For high-energy applications, the extreme purity of fused silica eliminates microscopic defect sites that could lead to laser damage.
| Material | UV Grade Fused Silica |
| Thickness Tolerance | ± 0.2 mm |
| Diameter Tolerance | +0.0/-0.25 mm |
| Transmitted Wavefront Distortion | λ/10 @ 632.8, transmitted |
| Parallelism | ≤ 10 arc seconds |
| Surface Quality | 10-5 Scratch-Dig |
| Clear Aperture | Central 90% of diameter |