DMc150 Double Monochromator
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 | 1.35nm/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 acquisition speed | 30nm/s |