The Tech Spec laser line nonpolarizing plate beamsplitters released by Edmund Optics Inc. feature a 50% reflection/50% transmission ratio and are insensitive to input beam polarization. Available in 12.5- and 25-mm-diameter versions, they have high damage thresholds and integrate easily into many laser applications. The coating is complemented by a high-efficiency antireflection V-coating. An excimer-grade UV fused-silica substrate with 10-5 surface quality and 5-arc-sec parallelism provides good thermal stability, wavefront distortion of λ/10 at 632.8 nm and ultralow autofluorescence. Polarization separation is <5%.