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    Groove Density (grooves/mm)
    Wavelength Range (nm)
    Dimensions (mm)
    Design Wavelength DWL (nm)

    Diffraction Gratings

    Diffraction Gratings are optical components used to separate light into its component wavelengths. Diffraction Gratings are used in spectroscopy, or for integration into spectrophotometers or monochromators. Diffraction Gratings consist of a series of closely packed grooves that have been engraved or etched into the Grating’s surface. Diffraction Gratings can be either transmissive or reflective. As light transmits through or reflects off a Grating, the grooves cause the light to diffract, dispersing the light into its component wavelengths. Diffraction Gratings should be handled with care due to soft coatings and should not be cleaned without consultation.

    Edmund Optics offers a wide range of transmission or reflection Gratings for the Ultraviolet (UV), Visible, or Infrared (IR) regions. When manufactured, a master Grating is used to create replicas of itself. The manufacturing process determines the type of Grating. A Ruled Grating consists of a series of grooves that have been ruled into the surface of a master grating utilizing a fine diamond tool. Ruled Gratings are used in applications that require high efficiency. Holographic Gratings are manufactured using the interference fringe field of two laser beams. Holographic Gratings are ideal for applications that require minimal stray light.


    High Performance Reflection Gratings
    • λ/4 Wave Reflected Wavefront
    • Superior Dimensional Tolerances
    • Groove Spacing Tolerance <0.05%

    Polarization Gratings
    • Selectively Diffract Light Based on Polarization
    • >96% Efficiency and <4% Leakage into Zero Order
    • 0.45mm Thick Transmission Grating
    • Multiple Diffraction Angles Available

    Holographic Diffraction Grating Film
    • Ideal for Spectroscopy
    • Two Groove Spacing Options
    • 6" x 12" Sheets and 200 Foot Rolls Available

    Manual Mini-Chrom Monochromators
    • 6 Choices of Wavelength Ranges
    • Compact, Handheld Size
    • 2 NIR Versions

    Near-IR (NIR) Reflective Gold Gratings
    • 15 to 20% Efficiency Increase Over Aluminum (0.7-1.1 microns)

    Reflective Blazed Holographic Diffraction Gratings
    • Less Stray Light than Ruled Diffraction Gratings
    • Improved Diffraction Efficiency Over Holographic Gratings
    • Broad Spectral Range

    Reflective Holographic Gratings
    • Groove Density up to 3600 Grooves per mm
    • Bare Aluminum Coating
    • Sinusoidal Grating Profile

    Reflective Ruled Diffraction Gratings
    • Up to 80% Efficiency
    • Bare Aluminum Coating
    • Blaze Wavelength Options from 250 to 1600nm

    Transmission Grating Beamsplitters
    • Ideal for Laser Beam Division
    • Designed for 0 Degree AOI
    • Low Groove Density for Maximized Beam Separation

    Transmission Gratings
    • Low Polarization Sensitivity
    • Ideal for In-Line Configurations

    UV Transmission Gratings
    • Multiple Diffraction Angles Available
    • UV Grade Fused Silica Substrate
    • Ideal for Fixed Grating Applications


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