WM600

Double monochromator-spectrograph based on the WM300

The WM600 monochromator-spectrograph is also available in a double-dispersive configuration, known as the Double WM300. In this setup, the output slit of the first WM300 serves as the input slit for the second WM300.

This modification offers improved spectral resolution—twice the performance—along with reduced stray light, thanks to the larger focal length and added dispersion.

Key Features:

  • The WM300 monochromator-spectrograph, as a configuration provides improved spectral resolution, with twice the performance, and reduced stray light, thanks to the larger focal length and the addition of dispersion.

    Efficient radiation transmission from the source to the monochromator can be achieved through various options, including spherical and toroidal optics, as well as optical fibers.

    Upon request, a spectral slit with blackened blades can be supplied.

    • High-precision measurement of energy and spectral characteristics for optical radiation sources and receivers of various types.

    • Capability for creating standards.

    • Customizable connection options for sources and monochromators (including spherical and toroidal optics, and optical fibers).

Wm200 TECHNICAL FEATURES:

  • Spectral range: Typical 190 – 3600 nm, extended up to 40um at your request

    • Optical scheme: Optimized Czerny-Turner with one optical input and two outputs

    • F/Number: 1: 3,8

    • Focal length, mm: 568

    • Flat field on the lateral port of the first M266, mm: 30 x 10

    • Flat field on the lateral port of the second M266, mm: 6 x 10

Diffraction Gratings

Diffraction gratings: 50 x 50 x 10 mm, one grating or a turret with 4 gratings from the list below*

Grooves/mm1) 2400 1800 1200 600 400 300
Reciprocal linear dispersion (average), nm/mm2) 0.79 1.06 1.59 3.19 3.16 4.8 4.7 6.37 6.32
Blaze wavelength, nm 225 270 400 750 1000 800 1700 1500 2000
Spectral range, nm3) 190–450 190–540 265–800 500–1500 660–1800 530–1600 1130–2600 1000–3000 1330–3600
Multichannel array bandpass on the output of the first WM300 (average), nm 3.84) 5.24) 7.64) 15.04) 8.05) 23.04) 12.05) 16.05) 16.05)
Spectral resolution on the output of the second WM300, nm <0.054) <0.0754) <0.114) <0.224) <0.225) <0.354) <0.355) <0.475) <0.475)
  • 1) Upon your request, diffraction gratings differing from the above can be used.
  • 2) Reciprocal linear dispersion is indicated for blazing wavelength.
  • 3) Wavelength range for which diffraction efficiency exceeds 40%.
  • 4) For a detector with 24 µm pixel size and 24.5 mm length of active area.
  • 5) For a detector with 25 µm pixel size and 12.8 mm length of active area.

    • Entrance/exit slits: Automatic and manual adjustment

    • Slit width, mm: 0 - 2

    • Slit height, mm: 12

    • Parallelism, µm: ±1

    • Micrometer Reading Accuracy, µm: ±1

    • Step size, µm: 0,001953125

    • Precision, µm: ± 1

    • Integrated shutter: Program-controlled, serves for measuring dark signal measuring

    • Intermediate slit width: 5

    • Filter wheel: Automatic switching

    • Max number of filters: 6

    • Standard number of filters: 5

    • Filter size, mm: 20

    • Optical diameter, mm: 18

    • PC connection: High-Speed USB

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WM500