Stigmatic Model 207A Monochromator

Monochromator by McPherson

Note: Your Quotation Request will be directed to McPherson.

The Model 207A from McPherson is a 670 mm focal length optically fast f/4.7 monochromator, now available with offaxis parabolic (OAP) optics. It provides coincident sagittal and tangential foci and perfect collimation and focusing. These highly polished OAP mirrors with smooth surfaces are especially suitable for work in the deep UV and vacuum region. Used in air and with a selection of gratings, the spectral range of the 207 extends from 185 nanometers to 20 microns or more. Under vacuum range is extended down to 105 nm (depends on the grating). The monochromator preserves high brightness with no chromatic aberrations and is an ideal instrument for use in tunable light source systems for illumination, imaging and spectroscopy. Other features include Snap-In diffraction gratings optimized for spectral resolution and/or for wavelength range coverage. For CCDs an accessible 50-millimeter wide focal plane, precise and durable slits for coupling free-space or fiber optic signals.

Product Specifications

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Product Details

  • Part Number
    Stigmatic Model 207A Monochromator
  • Manufacturer
  • Description
    Highest Throughput Monochromator for photoluminescence and Raman spectroscopy applications


  • Applications
    Photoluminescence , Raman spectroscopy

General Parameters

  • Monochromator Type
    UV Monochromator, VIS Monochromator
  • Configuration
  • Wavelength Range
    185 to 2600 nm
  • Linear Dispersion :
    0.43 to 19.84 nm/mm
  • Focal Length
    0.67 m
  • Aperture(f-number)
  • Grating Groove Density :
    75 to 3600 g/mm
  • Grating Size
    120 x 140 mm
  • Slit Resolution :
    0.02 to 0.014 nm
  • Wavelength accuracy
    +/- 0.05 nm
  • Wavelength Reproducibility
    ±0.005 nm

Technical Documents

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