Monochromator podwójny DK242 1/4 m

Spectral Products

The DK242 is two cascaded monochromators, with the exit slit of the first monochromator functioning as the entrance slit of the second.

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    • Internal controller connects to any computer via RS232 or IEEE-488. Hands-off control of three slit assemblies and two grating turrets.
    • Scans in both directions and with Constant Spectral Resolution (CSR).
    • Triple-grating turrets allows high efficiency scanning across a broad spectral range.
    • Additive dispersion increases resolution and reduces stray light for Raman and fluorescence studies, subtractive dispersion minimizes broadening of pulse sources.
    • Integrates with SP filter wheel for automatic filter switching.
    • May be factory configured as a monochromator or spectrograph.



    Double cascaded Czerny-Turner.
    Triple-grating turrets standard in each section.

    Focal Length:

    240mm each section


    3.9 overall

    Reciprocal Dispersion:

    1.60nm/mm (additive) --- (with 1200 g/mm grating)

    Wavelength Drive:

    Dual worm and wheel with electronic synchronization and computer control.
    Programmable in additive or subtractive dispersion

    Wavelength Precision:

    0.01nm (additive)    0.01nm (subtractive)

    Wavelength Accuracy:

    ± 0.30nm standard (with 1200 g/mm grating)

    Scan Speed:

    ​>1 to 1200nm/minute (with grating)

    Stray Light:

    ​< 10-9


    Unilateral, computer controlled, curved entrance and straight exit standard. 
    Width - 10μm to 3000μm 
    Height - 2mm to 20mm

    Pulse Broadening:

    200 ps max (additive) 10 fs max (subtractive)

    Max Resolution:

    <0.04nm (additive)    0.06nm (subtractive)


    Two to six gratings (68 x 68mm standard, 68 x 84mm optional) must be purchased. See DK Gratings.


    Demonstration control program and LabView driver included.


    110 / 120V, 50/60Hz @ 1A standard. 220/230/240V, 50/60Hz @ 0.5A optional.


    RS232 standard


    One year


    • DKBS - Bi-lateral slits
    • DKGPIB - IEEE-488 communication interface (internal)
    • DK2400 and Hand-held controllers for local control
    • IR240 - Gold optics
    • DK2PORT - Bifurcated fiber bundle for attaching 2 devices to 1 port.
    • AB300 - Automated 6 position filter wheel