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  • 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

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    Main parameters
  • Core parameters
  • Laser Wavelength Transmission Band

    808 nm Tavg > 93 % 813.3–1822.3 nm

  • Dimension Drawing
  • General Parameters

    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

    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

    图片1.png 

     

     

    Optical Density Spectrum

    图片2.png 


    Optional Configurations

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    Downloads

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  • Product title: 808 nm Ultra-Steep Long-Wave Pass Filter
  • Product link: https://www.idealphotonics.com/product/detail/1682.html
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