Optical crystals/ CaF2 meniscus lens/ MgF2 bi convex lens/ Ge lens/ ZnSe lens/ BaF2 plano convex len

Nd: doping 0.1%,0.2%,0.27%,0.5%,1%,2%,3%,5% Dimension tolerance:+/-0.1mm Flatness: /8l @633nm Surface quality: Scratch/Dig 10/5 Parallelism: better than 20 arc sec. Perpendicularity: better than 15 arc min Angle tolerance: < 0.5degree AR coating: AR:R<0.2%@1064nm, R<0.5@808nm HR:R>99.8%@1064nm,R<5%@ 808nm Clear aperture: >90% central area Transmitting wavefront distortion: less than /8l @ 633nm Quality Warranty Period: one year under proper use