3.0 OD 12.5mm Diameter VUV ND Filter

Product Details Consistent Transmission from 120-200nm Optical Densities Ranging from 0.3 to 3.0 Ideal for Raman Spectroscopy and Excimer Lasers VUV Neutral Density (ND) Filters are used to attenuate light in the Vacuum UV (VUV) range of 120-200nm and are coated on Magnesium Fluoride (MgF 2 ) substrates to deliver consistent transmission within that range. Metallic films, over-coated with a dielectric protective layer, ensure a high-quality filter coating for reliable performance. These filters are calibrated at strong spectral lines over the range of 120-200nm, making them suitable for applications utilizing the Lyman-alpha 121.6nm line and molecular hydrogen emission band at 157.8 and 160.8nm. VUV Neutral Density (ND) Filters are ideal for a range of spectroscopic and Excimer laser-based applications. Specifications General Type of Filter: Reflective ND Filter Type: Neutral Density Filter Physical & Mechanical Properties Diameter (mm): 12.50 Thickness (mm): 2.00 ±0.10 Clear Aperture (%): 80.00 Parallelism (arcsec): 1 Optical Properties Optical Density OD (Average): 3.0 +0.22/-0.23 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More UV Grade MgF 2 Coating: VUV (120 – 200) Reflective Material: Metallic Based ND, with Dielectric Over-Coat Surface Quality: 40-20 Transmission (%): 0.10 Blocking Wavelength Range (nm): 120 – 200 Transmitted Wavefront, P-V: λ/4 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × REACH 241: Compliant ×