The monoLIGHT is a toroidal grating monochromator for laboratory VUV sources, compatible with most models available on the market. In its standard configuration, it is optimized for high efficiency at both He I and He II.

Utilizing the full solid angle of the source, it gives extremely high intensity at the sample even after monochromatization. Complete separation of He I α and He I β is achieved while maintaining a narrow bandwidth.



  • Toroidal grating monochromator

  • High flux

  • Compact footprint

  • Input / exit ports CF35 

  • Pump port CF100

  • Bake-out temperature <120°C

  • Customizable according to user requirements



  • VUV source monochromatization

  • Ultraviolet photoemission spectroscopy UPS
  • Angle-resolved photoemission spectroscopy ARPES


The monochromator is easily adapted to a broad range of sources and applications.


This includes e.g.:

  • grating choice according to desired spectral line

  • length of incoming and outgoing arm manufactured to fit the experiment



For further specifications, please download the product spec sheet:

Please send us an email inquiry for further information, references or a quotation.

Special solutions


We offer specialized solutions for almost every application, including:

  • automated wavelength selection, motorized grating position

  • differential pumping


Please contact us with any special requirements you may have.


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