1)Narrow Band Beamsplitter Cube Specifications Material:BK7 grade A optical glass Dimension Tolerance:?.2mm Flatness:λ/4@ 632.8nm Surface Quality:60/40 scratch and dig T/R;50/50?% T=(Ts+Tp)/2, R=(Rs+Rp)/2 Beam Deviation:<3 arc minutes Coatings:Single wavelength partial reflectance:on hypotenuse face\"v\"AR-coatings:on all input and output face 2)Broadband Beamsplitter Cube Specifications: Material:BK7 grade A optical glass Dimension Tolerance:?.2mm Flatness:λ/4 @ 632.8nm Surface Quality:60/40 scratch and dig T/R:50/50?% T=(Ts+Tp)/2,R=(Rs+Rp)/2 Beam Deviation:＜3arc minutes Coatings:Broadband partial reflectance:on hypotenuse face BBAR-coatings:on all input and output face