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 2 to 125 nm.
• Imaging CorrectionPlus Technology
• On Axial optical design
• Choice of master or replica gratings
• Kinematic Grating Mount or three gratings slider
• CCD port mounted on X table
• Patented layout
• High vacuum compatible
• The best image on your CCD over 25 mm focal plane
• Less room needed and easy to align
• Optimize damage threshold or cost
• Interchangeable gratings
• In vacuum focus adjustment
• Use grazing incidence angles onto the optics and normal incidence for CCD illumination
• 5 10-6 mbar– option 5 10-9 mbar
Monograph with 1000 mm focal length to cover the 2-126 nm spectral range.
Toroidal Mirror and Plane Grating VLS Type
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
5 10-6 mbar (HV version)
5 10-9 mbar (UHV version)
DN63 CF (DN100 CF)
Micrometric slits (10 µm to 2 mm)
DN40 KF (DN40 CF)
Micrometric slits (10 µm to 2 mm) or Adjustable CCD port
|Exit flange||DN40 KF (DN40 CF) for slit version|
DN100 CF for CCD version
|PC interface||Built-in USB2 (no additional controller)|
Clinical chemistry measurements are based on optical spectrometry for most of the blood molecules and also based on potentiometry for a few blood ions.
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