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ZnSe/Ge Brewster Window

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.

Specifications

Brewster Window

Diameter Tolerance: +0.0, -0.13 mm
Thickness Tolerance: ±0.25mm
Clear Aperture: >80%
Parallelism: <3 arc min
Surface Quality: 40-20 scratch and dig
Flatness λ /4 per 1”Dia @632.8nm

Part No. Material Diameter (inch/mm) Thickness (mm)
WBG-0.5*2-2 Ge 0.5*2.0 2.0
WBG-0.6*2.5-2 Ge 0.6*2.5 2.0
WBG-0.7*2.9-2 Ge 0.7*2.9 2.0
WBG-1.0*4.1-3 Ge 1.0*4.1 3.0
WBG-1.5*3.9-4 Ge 1.5*3.9 4.0
WBG-2.0*5.2-5 Ge 2.0*5.2 5.0
WZB-26.4*10.2-2 ZnSe 26.4*10.2(mm) 2.0
WZB-0.7*1.8-2 ZnSe 0.7*1.8 2.0
WZB-0.6*1.5-2 ZnSe 0.6*1.5 2.0
WZB-0.5*1.3-2C(Corner cut) ZnSe 0.5*1.3 2.0
WZB-0.5*1.3-2 ZnSe 0.5*1.3 2.0
WZB-25*66-3 ZnSe 25*66(mm) 3.0
WZB-25*50-3 ZnSe 25*50(mm) 3.0
WZB-20.3*52.8-3 ZnSe 20.3*52.8(mm) 3.0
WZB-1.0*2.6-3 ZnSe 1.0*2.6 3.0
WZB-53*20-3 ZnSe 53*20(mm) 3.0
WZB-1.5*3.9-4 ZnSe 1.5*3.9 4.0
WZB-2.0*5.2-5 ZnSe 2.0*5.2 5.0
WZB-30*75-5 ZnSe 30*75(mm) 5.0

The angle which p reflectance drops to zero, termed brewster's angle, can be calculated from:

θb=tan-1(n)