Brewster window is uncoated substrate used in an optical system at Brewster Angle. It is used to separate the S polarization from the P polarization. Placed at Brewster's Angle the P-Polarization portion of the light will pass through the window 100%, while the S Polarization portion will be 20% reflected. MT-Optics,Inc. offer brewster window made from BK7 and UV Fuses Silica.

Specifications:

Material:----------------------------------------------------------BK7 Grade A, UV Grade Fused Silica
Dimension Tolerance:---------------------------------------------------+0.0/-0.2mm
Thickness tolerance:-----------------------------------------------------+/-0.2mm
Clear Aperture:------------------------------------------------------------>90%
Parallelism:---------------------------------------------------------------- -<10 arc seconds
Surface Quality:----------------------------------------------------------- 20/10
Wavefront Distortion:------------------------------------------------------<λ/10@633nm
Protected bevel:------------------------------------------------------------<0.5mmx45deg
Coating:------------------------------------------------------------------------None
Damage Threshold:-------------------------------------------------------->20J/cm2, 20ns, 20Hz, 1064nm

Standard product