Name BBO Product Description Beta-Barium Borate (β-BaB2O4,BBO) Diameter(Tolerance) (W?.1mm)x(H?.1mm)x(L+0.5/-0.1mm) (L≥2.5mm) Chamfer ≤0.2mm at 45? Perpendicalasity ≤5 arc minutes Parallelism ≤20 arc seconds Rod End Face Flatness less than λ/8 at 633nm Rod End finish better than 10/5 to MIL-O-13830A Fiavefront Distortion less than λ/8 at 633nm Clear aperture central 90% of the diameter ************************************************** shanghai chinese crystal co.,ltd ************************************************** Beta-Barium Borate (??-BaB2O4,BBO)nonlinear optical crystals Beta-Barium Borate (??-BaB2O4,BBO)nonlinear optical crystals Beta-Barium Borate (??-BaB2O4,BBO)nonlinear optical crystals Beta-Barium Borate (??-BaB2O4,BBO)nonlinear optical crystals