50% Reflection/50% Transmissions High Damage Threshold Non-polarizing The laser line plate beam splitters feature a 50R/50T ratio and are insensitive to input beam polarization, Available in 25.4mm diameters as well as 50mm square, the beam splitters feature high damage thresholds and can be easily integrated into a variety of laser applications. The beam splitter coating is complemented by a high efficiency AR V-coating for enhanced performance. A precision excimer grade UV grade fused silica substrate, featuring a 20-10 surface quality and 5 arc second parallelisms, provides excellent thermal stability, low wave front distortion, and ultra-low auto-fluorescence. Material: Excimer grade UV fused silica Thickness: 3.0+/-0.1mm Clear aperture: 80% Polarization separation :< 5% Surface quality: 20-10 Parallelism: 5 arc second Coating: 45deg+/-5deg AOI Dimensional Tolerance:+0.00/-0.10mm Trans.Wavefront Distortion:1/10入@632.8nm Front surface: 50%R/50%T+/-5% @CWL Back surface: Rabs 2j/cm2