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  • 830 nm Ultra-Steep Long-Wave Pass Filter

    This product is an ultra-steep long-wave pass filter specifically designed for 830 nm laser Raman spectroscopy systems. It effectively blocks the 830 nm laser line and short-wavelength background light while offering high transmission for long-wavelength Raman scattering signals. Manufactured with a fused silica substrate and high-performance multilayer dielectric coatings, it features deep blocking, high transmittance, narrow transition band, and steep edges. It is suitable for Raman spectrometers, biomedical detection, chemical analysis, and near-infrared spectral systems.

    Product features:Optimized for 830 nm laser applications;Blocking depth > OD6 at 830 nm;Average transmission > 93% in the 835.4–1872.2 nm band;Average transmittance > 93%;Ultra‑steep edge design;Fused silica substrate

    Part Number:MP-LPF-830

    Application area:Raman spectrometers | Micro-Raman systemss | Biomedical Detection | Chemical substance detection | Research and laboratory equipment

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    Main parameters
  • Core parameters
  • Laser Wavelength Transmission Band

    830 nm Tavg > 93 % 835.4–1872.2 nm

  • Dimension Drawing
  • General Parameters

    Specification

    Value

    Laser Wavelength

    830 nm

    Transmission Band

    Tavg > 93 %  835.4–1872.2 nm

    Blocking Band

    OD > 6  830 nm

    Blocking Band

    ODavg > 6  664–830 nm

    Edge Steepness

    Ultrasteep (for Raman)

    Edge Steepness

    0.002

    Edge Steepness

    24 cm-1

    Edge Steepness

    1.7

    Edge Wavelength

    832.5 nm

    Transition Width

    4.2 nm

    Transition Width

    60 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

    2.12

    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: 830 nm Ultra-Steep Long-Wave Pass Filter
  • Product link: https://www.idealphotonics.com/product/detail/1680.html
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