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| XNF •
XsquaredTM Notch Filters |
Questions? Call Us!
1-505-296-9541
Order Now! |
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Notch Filters for Raman andf fluorescence applications |
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Deep notches for maximum laser rejection |
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High transmission outside the notch to detect the weakest signals |
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Hard dielectric sputtered coatings for proven environmental stability and durability |
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Filter-stack holders are available |
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| Specifications | |
| Diameter | 25.0 mm +0/-0.15 mm |
| Mounting | Black-anodized aluminum ring |
| Optical Material | Fused silica with ultralow autofluorescence |
| Surface Quality | 60-40 scratch and dig |
| Thickness | 4.0mm +0.1/-0.6 mm |
| Maximum | <1.1×NBW |
| Typical | NBW=55×10 -6×λ c 2+14×10 -3×λ c-5.9
[e.g.,17 nm (600cm -1) for a 532.0-nm filter] |
| 90% Notch Bandwidth | <1.3×NBW |
| Angle of Incidence | 0.0°±5.0° |
| Angle Tuning Range* | -1.0 % of laser wavelength
(e.g., -5.3 nm or +190 cm -1 for a 532-nm filter) |
| Clear Aperture | >80% of central diameter |
| Coating Technology | "Hard" sputtered |
| Damage Threshold | 1 J/cm2, 10 nsec, 20 Hz @ 532 nm |
| Environmental Durability | per MIL-STD-810F |
| Laser Line Blocking | Optical Density > 6 |
| Average Transmission | >90% |
| Transmission Ripple | <2.5% |
| Width | 0.75×λ c to λ c / 0.75 |
| Physical Durability | per MIL-C-48497A |
| Transmitted Wavefront Error | λ/4 rms at 633 nm |
Print Page from Catalog
List of Downloadable Documents |
Typical notch filter for 632.8 nm laser line | 
Optical density vs. wavelength of typical notch filter for 632.8 nm laser line |
| These filters are ideal for Raman and fluorescence applications, where maximum blocking of the laser line is required. These filters are designed to withstand aggressive environmental conditions. Ultralow autofluorescence fused silica has a small thermal coefficient of expansion over a large temperature range. |
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Check Available Now
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| Part Number | λc (nm) | Price | Add
to
Cart | In
Stock |
| XNF-405.0-25.0M | 405.0 | $545 |  | Call |
| XNF-441.6-25.0M | 441.6 | $545 | | Call |
| XNF-488.0-25.0M | 488.0 | $545 | | Call |
| XNF-514.5-25.0M | 514.5 | $545 | | Call |
| XNF-532.0-25.0M | 532.0 | $545 | | Call |
| XNF-632.8-25.0M | 632.8 | $545 | | Call |
| XNF-785.0-25.0M | 785.0 | $545 | | Call |
| XNF-808.0-25.0M | 808.0 | $545 | | Call |
| XNF-830.0-25.0M | 830.0 | $545 | | Call |
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