eSource Optics Custom p/n 1201BBVUVBS:  Unmounted and Open-Faced Broadband VUV-UV Beamsplitter designed to provide 40% to 50% average Reflectance and Transmission over the 170nm to 300nm VUV-UV wavelength range @ 45 degrees Angle of Incidence (AOI) Unpolarized.12.7mm Diameter x 1.0mm thick as follows:

Material: UV Grade Fused Silica
Wavelength Range: 170-300nm
Diameter (Ø):  12.7mm± 0.125mm
Thickness: 1.0mm ± 0.125mm
Surface Quality: ~60-40-scratch-dig both sides
Surface Figure: ~ 5 waves @ 632.8nm both sides
Wedge: <= 15 arc minutes
Clear Aperture: central 85%

                                                

                                                   
         eSource Optics / PMB 126, 1225 Providence Rd, Whitinsville, MA 01588

       VUV-UV Optical Filters & Mirrors/ VUV-UV Windows/Lenses & Prisms