Narrow bandwidth, high transmittance, wide blocking range
This laser line filter is a high-performance hard-coated filter with high transmittance and a wide blocking range. It allows only a narrow band very close to a specific laser wavelength to pass through while blocking other wavelength ranges. In gas lasers, in addition to the main oscillation wavelength, there are plasma lines that can interfere with spectral measurements. In this case, only the laser oscillation line can be used, which enhances the purity of the laser.
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basic information
■ High transmittance (＞90% (typical), ＞80% for 405nm only) ■ Narrow bandwidth (FWHM 2.2nm (typical)) ■ OD value ＞3 (typical) ■ Blocking range 300–1200 nm (excluding transmitted wavelengths) ■ Incident angle 0±5°
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Applications/Examples of results
■ Raman spectroscopy ■ Laser excitation ■ Fluorescence measurement ■ Biophotonics ■ Microscope
Line up（18）
| Model number | overview |
|---|---|
| 405 BPF-12.5 | Laser wavelength 405nm, transmittance >80% (representative value), Φ12.5mm size |
| 405 BPF-25.0 | Laser wavelength 405nm, transmittance >80% (representative value), Φ25mm size |
| 488 BPF-12.5 | Laser wavelength 488nm, transmittance >90% (representative value), Φ12.5mm size |
| 488 BPF-25.0 | Laser wavelength 488nm, transmittance >90% (representative value), Φ25mm size |
| 514.5 BPF-12.5 | Laser wavelength 514.5nm, transmittance >90% (representative value), Φ12.5mm size |
| 514.5 BPF-25.0 | Laser wavelength 514.5nm, transmittance >90% (representative value), Φ25mm size |
| 532 BPF-12.5 | Laser wavelength 532nm, transmittance >90% (representative value), Φ12.5mm size |
| 532 BPF-25.0 | Laser wavelength 532nm, transmittance >90% (representative value), Φ25mm size |
| 633 BPF-12.5 | Laser wavelength 633nm, transmittance >90% (representative value), Φ12.5mm size |
| 633 BPF-25.0 | Laser wavelength 633nm, transmittance >90% (representative value), Φ25mm size |
| 638 BPF-12.5 | Laser wavelength 638nm, transmittance >90% (representative value), Φ12.5mm size |
| 638 BPF-25.0 | Laser wavelength 638nm, transmittance >90% (representative value), Φ25mm size |
| 785 BPF-12.5 | Laser wavelength 785nm, transmittance >90% (representative value), Φ12.5mm size |
| 785 BPF-25.0 | Laser wavelength 785nm, transmittance >90% (representative value), Φ25mm size |
| 830 BPF-12.5 | Laser wavelength 830nm, transmittance >90% (representative value), Φ12.5mm size |
| 830 BPF-25.0 | Laser wavelength 830nm, transmittance >90% (representative value), Φ25mm size |
| 1064 BPF-12.5 | Laser wavelength 1064nm, transmittance >90% (representative value), Φ12.5mm size |
| 1064 BPF-25.0 | Laser wavelength 1064nm, transmittance >90% (representative value), Φ25mm 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.