Vacuum Ultra Violet Spectroscopy
There are several names given to wavelengths below the Ultra Violet. However, because of the absorption of the air down to few nanometers, and the need to evacuate any part of the environmental
The Plane Grating Monochromator/Spectrograph (PGM-PGS) series is a unique optical design coupling a toroïdal mirror and an aberration corrected rotating plane grating. Each grating has been especially designed thanks to our Imaging CorrectionPLUS Technology, to have a perfect coupling with its associated toroïdal mirror. Compared to a Rowland-Circle configuration, this solution features two major advantages: firstly it can be used both in multichannel mode (real flat field) and in single channel (with an exit slit); secondly the optical design is straight (entrance and exit arms parallel) and the exit (whether detector or slit) is fixed which makes integration and calibration very easy.
With a large choice of gratings (both master and replica) the PGM/PGS series covers a large VUV range from 4 to 125 nm.
Monograph with 1000 mm focal length to cover the 2-126 nm spectral range.
Toroidal Mirror and Plane Grating Type IV
1800 gr/mm : 2-35 nm (8-35 nm in monochromator mode)
550 gr/mm : 7-126 nm (30-125 nm in monochromator mode)
Pt or Au
1800 gr/mm : 0.09 nm/mm at 8 nm
550 gr/mm : 0.3 nm/mm at 30 nm
10-6 mbar (HV version)
10-8 mbar (UHV version)
Micrometric slits (10 µm to 2 mm)
Micrometric slits (10 µm to 2 mm) or Adjustable CCD port
|Exit flange||DN40 KF for slit version|
DN100CF for CCD version
|PC interface||RS232 – USB2|
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