Transmission Grating Beam Splitters

110 Groove, Transmission Grating Beamsplitter, 25 mm Sq., 3 mm Thick

Price: $307.00

Transmission Grating Beam Splitter Specifications | TGB110-25

Grooves Per mm


632.8 nm Efficiency at -2nd Order


632.8 nm Efficiency at -1st Order

25% Nominal

632.8 nm Efficiency at 0th Order

28% Nominal

632.8 nm Efficiency at +1st Order

25% Nominal

632.8 nm Efficiency at +2nd Order




Size (mm)

25 mm Sq.

Size Tolerance

±0.5 mm


3 mm

Thickness Tolerance

±0.5 mm

Optical Coating




Clear Aperture


Edge Angle

90° ±0.50°


90° ±0.50°

Operating Temperature Range

-50° C to +125° C

Damage Threshold: Pulsed

350 mJ/cm², 200 nano sec. pulse

Damage Threshold: CW laser

40 watts/cm²

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    Beam Path

    In Line



    f Number


    Focal Length

    74 mm

    Grating Density

    1200 grooves/mm

    Grating Blaze Wavelength

    400 nm

    Linear Dispersion (Center of Range)

    11.15 nm/mm

    Operating Temperature Range

    -20° C to +80° C

    Stray Light

    ≤ 0.02%

    Wavelength Accuracy

    ± 0.2% of λ

    Wavelength Range

    360 – 800 nm

    Wavelength Readability

    0.2 nm

    Wavelength Reproducibility

    ± 0.15%

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