MS200 series Monochromator-spectrograph, perfect imaging

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MS200 Series monochromators–spectrographs are compact general-purpose instruments which can be used as monochromators or spectrographs with a large flat focal field. They are completely automated spectral devices with focal length of 200 mm and F-number of 1/3.6. Despite of compact overall sizes the parameters of short-focus monochromators–spectrographs do not concede to the parameters of long-focal spectral devices of other manufacturers.

MS200 Series monochromator-spectrographs are based on Cherny–Turner asymmetric scheme that allows to minimize of aberrations and exclude spectra re-entrance from diffraction gratings and mirrors.

High-quality optics and wide choice of diffraction gratings provide devices operation in a wide range from 185 nm up to 60 µm (depending on the selected grating).

Model MS2001i and model MS2004i have the astigmatism-corrected optics what makes these devices applicable in multi-channel spectroscopy.


A single-position holder for easy manual switching of gratings is used in both models MS2001 and MS2001i. A wide choice of changeable gratings gives the best combination of high energetic efficiency and maximal spectral resolution for different spectrum areas.

Automated four-grating turret (model MS2004 and model MS2004i) provides a fast switching of gratings with high repeatability of the set wavelength. Monochromators–spectrographs of MS200 series have one input port and two output ports. Selection of an output port is realized with an automated mirror. Either output spectral slits or multi-channel detectors can be installed on each of the output ports.

We offer monochromators–spectrographs of MS200 Series with two types of input and output spectral slits: manual, operated with a micrometer screw and automated (combined) when the slit width is operated automatically or manually (with micrometer).

Compactness in combination with technical characteristics make monochromators–spectrographs of MS200 Series ideal for OEM applications in customized spectroscopy systems.




MS2004 2

MS benefits


SOL instruments: спектрометр, рамановский микроскоп, эмиссионный спектрометр. Sh MS2001 2001i


SOL instruments: спектрометр, рамановский микроскоп, эмиссионный спектрометр. Sh MS2004 2004i


SOL instruments: спектрометр, рамановский микроскоп, эмиссионный спектрометр. book-2

Theory & Instructions
1. Spectral Instrument. Basic Concepts and Characteristics.
2. Spectral Devices. A Spectral Device Selection.
3. Spectra Detection. Detector Selection.

Models of monochromators–spectrographs of MS200 series

  MS2001 MS2001i MS2004 MS2004i
Diffraction unit Single-position holder for manually changeable gratings Single-position holder for manually changeable gratings Four–grating turret Four–grating turret
Optics Standard Astigmatism–compensated (Imaging) Standard Astigmatism–compensated (Imaging)


In the devices with the standard optics (model MS2001 and model MS2004) a flat entrance deflecting mirror is used, and in the astigmatism–compensated devices (model MS2001i and model MS2004i) a cylindrical mirror is used as an entrance deflecting.

As well as in all Czerny–Turner design spectral devices, in the MS200 series an axis of the diffraction gratings rotation goes through the center of grating operating surface and coincides with the direction of grooves. This fact provides the stability of the geometry of the beams for formation of a flat and fixed focal field. The image quality in the whole flat focal field is optimized due to the use of an asymmetric scheme and use of a focusing large-size mirror allows one to use the whole focal field width without vignetting. Besides, Cherny–Turner asymmetric scheme provides a low level stray light and light re-entrance from the optical elements and detectors can be avoided.