Narrow bandwidth, high blocking performance, high transmittance
This notch filter is a hard-coated filter with high blocking performance and a narrow bandwidth. It blocks only the narrow wavelength range before and after a specific wavelength, while allowing other wavelength ranges to pass through, enabling spectral separation. In Raman spectroscopy, both Stokes Raman scattering light (longer wavelength than the laser) and anti-Stokes Raman scattering light (shorter wavelength than the laser) can be detected simultaneously.
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basic information
■ Narrow bandwidth ■ High transmittance (>90% (typical)) ■ High blocking performance (OD value >6 (typical)) ■ Long lifespan, high durability ■ Transmitted wavelength 0.8 × CWL to 1.33 × CWL (typical) (excluding 442nm) ■ Incident angle 0° ■ Effective aperture 8 mm (Φ12.5 mm filter), 21 mm (Φ25 mm filter)
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Applications/Examples of results
■ Raman spectroscopy ■ Laser excitation ■ Fluorescence measurement ■ Biophotonics ■ Microscope
Line up（26）
| Model number | overview |
|---|---|
| 442-10 NNF-12.5 | Laser wavelength 442nm, 10nm (at 50% bandwidth), Φ12.5nm size |
| 442-10 NNF-25.0 | Laser wavelength 442nm, 10nm (at 50% bandwidth), Φ25nm size |
| 457-10 NNF-12.5 | Laser wavelength 457nm, 10nm (at 50% bandwidth), Φ12.5nm size |
| 457-10 NNF-25.0 | Laser wavelength 457nm, 10nm (at 50% bandwidth), Φ25nm size |
| 476-10 NNF-12.5 | Laser wavelength 476nm, 10nm (at 50% bandwidth), Φ12.5nm size |
| 476-10 NNF-25.0 | Laser wavelength 476nm, 10nm (at 50% bandwidth), Φ25nm size |
| 488-10 NNF-12.5 | Laser wavelength 488nm, 10nm (at 50% bandwidth), Φ12.5nm size |
| 488-10 NNF-25.0 | Laser wavelength 488nm, 10nm (at 50% bandwidth), Φ25nm size |
| 514.5-12 NNF-12.5 | Laser wavelength 514.5nm, 12nm (at 50% bandwidth), Φ12.5nm size |
| 514.5-12 NNF-25.0 | Laser wavelength 514.5nm, 12nm (at 50% bandwidth), Φ25nm size |
| 532-12 NNF-12.5 | Laser wavelength 532nm, 12nm (at 50% bandwidth), Φ12.5nm size |
| 532-12 NNF-25.0 | Laser wavelength 532nm, 12nm (at 50% bandwidth), Φ25nm size |
| 632.8-16 NNF-12.5 | Laser wavelength 632.8nm, 16nm (at 50% bandwidth), Φ12.5nm size |
| 632.8-16 NNF-25.0 | Laser wavelength 632.8nm, 16nm (at 50% bandwidth), Φ25nm size |
| 650-17 NNF-12.5 | Laser wavelength 650nm, 17nm (at 50% bandwidth), Φ12.5nm size |
| 650-17 NNF-25.0 | Laser wavelength 650nm, 17nm (at 50% bandwidth), Φ25nm size |
| 676-17 NNF-12.5 | Laser wavelength 676nm, 17nm (at 50% bandwidth), Φ12.5nm size |
| 676-17 NNF-25.0 | Laser wavelength 676nm, 17nm (at 50% bandwidth), Φ25nm size |
| 752-19 NNF-12.5 | Laser wavelength 752nm, 19nm (at 50% bandwidth), Φ12.5nm size |
| 752-19 NNF-25.0 | Laser wavelength 752nm, 19nm (at 50% bandwidth), Φ25nm size |
| 785-20 NNF-12.5 | Laser wavelength 785nm, 20nm (at 50% bandwidth), Φ12.5nm size |
| 785-20 NNF-25.0 | Laser wavelength 785nm, 20nm (at 50% bandwidth), Φ25nm size |
| 830-21 NNF-12.5 | Laser wavelength 830nm, 21nm (at 50% bandwidth), Φ12.5nm size |
| 830-21 NNF-25.0 | Laser wavelength 830nm, 21nm (at 50% bandwidth), Φ25nm size |
| 1064-36 NNF-12.5 | Laser wavelength 1064nm, 36nm (at 50% bandwidth), Φ12.5nm size |
| 1064-36 NNF-25.0 | Laser wavelength 1064nm, 36nm (at 50% bandwidth), Φ25nm size |
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We are a group of experts specializing in spectroscopy, focusing on cutting-edge equipment such as light sources, spectrometers, detectors, our unique laser measurement systems, analytical devices, and femtosecond laser processing.