Brewster windows are used for large angles of incidence so that they present a circular cross section to the incoming beam at the Brewster’s angle. These windows are polished to a laser grade finish on both sides. Please contact the Lambda’s sales team for more coating information.
If thickness ≤ 1.5mm : λ/4 @ 633nm
If thickness > 1.5mm : λ/10 @ 633nm