For our Brewster window sheet, the surface mass is 20-10 scratch - pitting and the transmission wavefront error is λ/10, which is very suitable for laser cavity.



These Brewster window sheets are basically made of uv fused quartz and have almost no laser-induced fluorescence (measured at 193 nm), making them ideal for UV to near-infrared applications. Because the refractive index of uV-fused quartz varies with wavelength, brewster Angle also depends on wavelength.