Brewster Windows are uncoated substrates which are used as polarizers, typically within a laser cavity. Positioned at Brewster's Angle (see calculation below) the P-Polarization portion of the light will pass through the window with no losses while the S Polarization portion will be reflected off the brewster window. Used in a laser cavity the brewster window is essentially a polarizer.
These Brewster windows are manufactured from UV fused silica, which exhibits virtually no laser-induced fluorescence (as measured at 193 nm), making it an ideal choice for applications from the UV to the near IR. For a plot of UV fused silica transmission, please see the Graph tab above.
Brewster's Angle is calculated from: B = tan-1(n), where B is Brewster's Angle and n is the index of refraction of the material.
|Surface Quality||20-10 scratch and dig|
|Surface Accuracy||λ/4 @633nm|
|Bevel||0.1 X 45 degree|
|Wedge||Brewster≤ 10 seconds, Elliptical ≤ 3 minutes|