Brewster Windows are uncoated substrates that are designed to be used at Brewster’s Angle (the angle at which p-polarized light incident on the surface is not reflected). Brewster’s Angle is given by the following formula:
B= tan-1(n)
Here, B is Brewster’s Angle and n is the index of the reflection of the material. At this angle, p-polarization reflectance drops to zero. When used in a laser cavity, a Brewster Window reduces the cavity loss for p-polarized light compared to s-polarized light. The result of preferentially reducing the loss along one polarization axis is that the laser will emit linearly polarized light.
Specifications
Material: | UV fused silica |
Minor axis diameter tolerance: | +0/-0.10mm |
Thickness tolerance: | +/-0.2mm |
Clear aperture: | > 90% |
Parallelism: | < 5 arc seconds |
Surface quality: | 10-5 scratch and dig |
Transmitted wavefront error: | λ/10 |
Brewster Angle: | 55°32′@ 632.8nm |
Brewster Windows are uncoated substrates that are designed to be used at Brewster’s Angle (the angle at which p-polarized light incident on the surface is not reflected). Brewster’s Angle is given by the following formula:
B= tan-1(n)
Here, B is Brewster’s Angle and n is the index of the reflection of the material. At this angle, p-polarization reflectance drops to zero. When used in a laser cavity, a Brewster Window reduces the cavity loss for p-polarized light compared to s-polarized light. The result of preferentially reducing the loss along one polarization axis is that the laser will emit linearly polarized light.
Specifications
Material: | UV fused silica |
Minor axis diameter tolerance: | +0/-0.10mm |
Thickness tolerance: | +/-0.2mm |
Clear aperture: | > 90% |
Parallelism: | < 5 arc seconds |
Surface quality: | 10-5 scratch and dig |
Transmitted wavefront error: | λ/10 |
Brewster Angle: | 55°32′@ 632.8nm |
