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  • 457.9 nm Ultrasteep Raman Long-Pass Filter

    Specifically designed for 457.9 nm Raman laser systems;Rayleigh scattering blocking depth > OD6;Ultra‑steep cut‑off edge;Raman shift cut‑off at only 108.7 cm⁻¹;Fused silica substrate – low fluorescence and low stress;High environmental stability for long‑term use

    Product features:Specifically designed for 441.6 nm laser Raman systems;Rayleigh blocking depth > OD6;Ultra‑steep cut‑off edge;Raman shift cut‑off at only 112.7 cm⁻¹;Fused silica substrate – low fluorescence and low stress;High environmental stability for long‑term use

    Part Number:MP-LPF-458

    Application area:Raman spectrometers | Confocal Raman microscopes | Semiconductor material inspection | Graphene and 2D material research | Scientific

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    Main parameters
  • Core parameters
  • Laser Wavelength Transmission Band

    457.9 nm Tavg > 93 % 463.9–1032.9 nm

  • Dimension Drawing
  • General Parameters

    Specification

    Value

    Laser Wavelength

    457.9 nm

    Transmission Band

    Tavg > 93 %  463.9–1032.9 nm

    Blocking Band

    OD > 6  457.9 nm

    Blocking Band

    ODavg > 6  367 – 457.9 nm (typical)

    Edge Steepness

    0.5 %

    Edge Steepness

    108.7 cm-1

    Edge Steepness

    Ultrasteep (for Raman)

    Edge Steepness

    2.3

    Edge Wavelength

    461.4 nm

    Transition Width

    4.6 nm

    Transition Width

    216 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

    2.0

    Optical Damage Rating

    0.5 J/cm2 @ 266 nm (10 ns pulse width),1 J/ @ 53 cm2 2 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2.png 

     

     

    Optical Density Spectrum

     

    图片3.png

    Optional Configurations

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  • Product title: 457.9 nm Ultrasteep Raman Long-Pass Filter
  • Product link: https://www.idealphotonics.com/product/detail/1654.html
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