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    • 355 nm Laser Line Bandpass Filter

    The MPLLF355 is a highperformance narrowband interference filter specifically designed for the 355 nm laser wavelength. Manufactured on highquality fused silica substrates with multilayer hard dielectric coatings, it provides high transmission (T > 80%) at the 355 nm laser wavelength while offering deep outofband blocking up to ODabs > 6 on both sides of the passband. This effectively improves the signaltonoise ratio and spectral purity of laser systems. With a narrow FWHM bandwidth of only 1.3 nm, the filter features narrow bandwidth, high transmission, and deep blocking, enabling selective transmission of the 355 nm laser line. It is widely used in thirdharmonic Nd:YAG laser systems, UV Raman spectroscopy, laserinduced fluorescence (LIF), semiconductor inspection, UV imaging, and scientific instrumentation.

    Product features：Specifically designed for the 355 nm laser wavelength；Suitable for third‑harmonic Nd:YAG (355 nm) laser systems；Transmission > 80% at the 355 nm laser wavelength；FWHM bandwidth of only 1.3 nm；Narrow‑band, high‑transmission design for improved spectral selectivity；Fused silica substrate for excellent UV optical

    Part Number：MP-LLF-325

    Application area：Third-harmonic Nd:YAG (355 nm) laser systems | Semiconductor inspection | UV Raman spectrometers | Laser-induced fluorescence (LIF) | Research laboratory equipment

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    Main parameters
  • Core parameters

  • Laser Wavelength Transmission Band

    355nm T > 80% 355 nm

  • Dimension Drawing
    • General Parameters

    Specification

    Value

    Laser Wavelength

    355nm

    Transmission Band

    T > 80%  355 nm

    Blocking Band

    ODabs > 5  314.8-351.5 nm

    Blocking Band

    ODabs > 6  326.6-349.7 nm

    Blocking Band

    ODabs > 6  360.3-390.5 nm

    Blocking Band

    ODabs > 5  358.6-422.5 nm

    FWHM Bandwidth

    1.3nm

    Guaranteed Minimum Bandwidth

    Transmission guaranteed for laser wavelength only

    Angle of Incidence

    0 ± 2 °

    Clear Aperture

    ≥ 10 mm

    Transverse Dimensions, Diameter

    12.5mm

    Filter Thickness, Mounted

    3.5mm

    Filter Thickness Tolerance, Mounted

    ± 0.1mm

    Filter Thickness, Unmounted

    2.0mm

    Filter Thickness Tolerance, Unmounted

    ± 0.1mm

    Surface Quality (Scratch-Dig)

    60-40

    Filter Effective Index

    1.71

    Optical Damage Rating

    0.1 J/cm sq. @ 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2.png 

     

    Optical Density Spectrum

     图片3.png


    Optional Configurations

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  • Product title: 355 nm Laser Line Bandpass Filter
  • Product link: https://www.idealphotonics.com/product/detail/1632.html

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      • Other Requirements:

    • 10+ 10 Years of Experience
    • 50 50 + Countries Bussiness
    • 10000 10k + Diodes sold worldwide
    • 30 30+ Invention patent
    • 10 10+ Advanced Optical Solutions

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