- Cart
- |
- Personal Center
- |


808 nm Ultra-Steep Long-Wave Pass Filter
The MP-LPF-808 is specifically designed for 808 nm laser Raman spectroscopy systems. It effectively blocks laser Rayleigh scattering while offering high transmission for Raman signals. Manufactured with high-precision ion-beam sputtering (IBS) multilayer dielectric coatings, it features an ultra-steep cutoff edge, high blocking depth, low fluorescence background, and excellent environmental stability, making it ideal for Raman spectroscopy, laser detection, biomedical analysis, research instruments, and industrial spectral systems.
Product features:Optimized for 808 nm Raman systems;Ultra‑steep cutoff edge with an edge width of only 4 nm;Laser blocking depth: OD6;Average transmittance > 93%;High damage threshold;Fused silica substrate with low auto‑fluorescence
Part Number:MP-LPF-808
Application area:Raman spectroscopy excitation systems | Laser spectral analysis | Biomedical Detection | Semiconductor inspection equipment | Research and laboratory equipment
Add to Cart Request for Quotation Consult Favorite
Laser Wavelength Transmission Band
808 nm Tavg > 93 % 813.3–1822.3 nm

Specification | Value |
Laser Wavelength | 808 nm |
Transmission Band | Tavg > 93 % 813.3–1822.3 nm |
Blocking Band | OD > 6 808 nm |
Blocking Band | ODavg > 6 647–808 nm |
Edge Steepness | Ultrasteep (for Raman) |
Edge Steepness | 0.002 |
Edge Steepness | 24.7 cm-1 |
Edge Steepness | 1.6 |
Edge Wavelength | 810.5 nm |
Transition Width | 4.0 nm |
Transition Width | 62 cm-1 |
Angle of Incidence | 0 ± 2° |
Cone Half-angle | 5° |
Clear Aperture | 22 mm |
Transverse Dimensions, Diameter | 25 mm |
Filter Thickness, Mounted | 3.5 mm |
Filter Thickness Tolerance, Mounted | ± 0.1 mm |
Filter Thickness, Unmounted | 2.0 mm |
Filter Thickness Tolerance, Unmounted | ± 0.1 mm |
Surface Quality (Scratch-Dig) | 60-40 |
Filter Effective Index | 2.15 |
Optical Damage Rating | 0.5 J/cm² @ 266 nm (10 ns pulse width), 1 J/cm² @ 532 nm (10 ns pulse width) |
Orientation | Arrow on ring is preferred direction of propagation of light |
Substrate Type | Fused Silica |
Spectral Characteristic Curves
Transmittance-Wavelength Spectrum
Optical Density Spectrum
--
Request for Quotation
We will reply to all your information about the product in time.
⇪