Features
Two 150mm focal length monochromators in Czerny-Turner mount
Sine bar driven pair of interchangeable, kinematically mounted diffraction gratings
One entrance and up to two exit ports, with automated mirror-based selection
Integrated drive electronics, dual-channel picoammeter and high voltage power supply
Compatible with the full range of sources, detectors and accessories of the Bentham portfolio
Fully automated through USB 2.0 interface
Optical Layout
| Configuration |
Pair symmetrical Czerny Turner monochromators, additive dispersion |
| Focal length |
- Total focal length: 300mm
- Individual units: 150mm |
| Grating mount |
Kinematic |
| Number of gratings |
1 pair |
| Grating size |
33x33mm |
| Aperture ratio |
f/4 |
| Number of entrance/exit ports |
1 entrance, 1-2 exits |
| Spectral range |
Within range 200nm-2400nm |
Opto-Mechanical
| Wavelength scanning |
By integrated stepping motor and micro-stepping drive electronics |
| Slit type |
Fixed, micrometer or motorised variable |
| Slit width & height |
10µm-10mm (W) x 20mm (H) |
| Filter size |
- 6 position filter wheel : 25mm diameter
- 8 position filter wheel : 22mm diameter |
Optical Performance (quoted for typical 2400 g/mm gratings)
| Spectral range |
200-600nm |
| Linear dispersion |
5.4nm/mm |
| Wavelength accuracy |
± 0.15nm, ± 0.05nm with software correction |
| Wavelength reproducibility |
± 0.05nm |
| Resolution full/reduced slit height |
0.25/0.1nm |
| Stray light rejection at 2.5 FWHM |
10-8 |
| Wavelength sweep speed |
30nm/s |
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