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UV Fused Silica Metallic Neutral Density Filters

UV Fused Silica Metallic Neutral Density Filters
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UV Fused Silica Metallic Neutral Density Filters - 1

O p t i c s 565 Email: sales@newport.com • Web: newport.com Filter Set High-Energy Variable Attenuators ø 25.4 3.0 ø 20.3 CLEAR APERTURE UV Fused Silica Metallic Neutral Density Filters Our metallic neutral density coatings provide broadband attenuation for lower power applications. The coating is deposited on one side of an ultra-pure UV grade fused silica substrate providing excellent transmission from the UV to near-infrared. All filters are permanently marked with the optical density and are available individually or in a set of eight. • Broadband attenuation, UV to near IR • Metallic neutral density coating • Low wavefront distortion • UV grade fused silica • For lower power applications Specifications Material UV grade fused silica Surface Flatness 25.4 mm Round: 1ë at 632.8 nm over the clear aperture 50.8 mm Square: 2ë at 632.8 nm over the clear aperture Clear Aperture central 80% of dimensions Surface Quality 60-40 scratch-dig Dimensions ±0.25 mm Thickness 3.0 ±0.25 mm Wedge 3 arc min Chamfers 0.25–0.76 mm face width x 45° ±15° Angle of Incidence 0° Optical Density at 632.8 nm 0.03 ±2.5%, 0.1 ±8%, 0.2 ±7%, 0.3 ±6%, 0.4 ±5% and ±4% at 0.5 OD 4.0 Durability MIL-C-48497A, adhesion, humidity, moderate abrasion, and solubility requirements Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 622) Damage Threshold 30 W/cm2 CW, typical; not recommended for pulsed laser use Ordering Information Optical Density at 632.8 nm Transmission at 632.8 nm Quantity in Filter Set Model Model 25.4 mm Dia 50.8 x 50.8 mm 0.03 93.3 % 1 FRQ-ND003 FSQ-ND003 0.1 79.4 % 2 FRQ-ND01 FSQ-ND01 0.2 63.1 % FRQ-ND02 FSQ-ND02 0.3 50.1 % 1 FRQ-ND03 FSQ-ND03 0.4 39.8 % FRQ-ND04 FSQ-ND04 0.5 31.6 % 1 FRQ-ND05 FSQ-ND05 0.6 25.1 % FRQ-ND06 FSQ-ND06 0.7 20 % FRQ-ND07 FSQ-ND07 0.8 15.8 % FRQ-ND08 FSQ-ND08 0.9 12.6 % FRQ-ND09 FSQ-ND09 1.0 10.0 % 1 FRQ-ND10 FSQ-ND10 1.5 3.2 % FRQ-ND15 FSQ-ND15 2.0 1.0 % 1 FRQ-ND20 FSQ-ND20 2.5 0.3 % FRQ-ND25 FSQ-ND25 3.0 0.1 % 1 FRQ-ND30 FSQ-ND30 4.0 0.01 % FRQ-ND40 FSQ-ND40 Set of Metallic Neutral Density Filters FR-ND FS-ND Please see page 445 for the optical density equation. 3.0 40.6 CLEAR APERTURE 50.8 FH-2S Filter Holder page 688 For attenuation of high-energy lasers, we recommend our Model 935 Variable Attenuator. WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES Availability – Guaranteed on select items @ newport.com

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