Imaging corrected spectrometers

Omni-λ Monochromators and Spectrographs

Model Omni-λ Series

The Czerny-Turner monochromator and spectrograph line the rest of the spectroscopy range is built around, in 200, 320, 500 and 750 mm focal lengths. Every model ships pre-aligned and pre-calibrated, and the 320 mm and longer models take an interchangeable triple grating turret so UV, visible and NIR gratings can be swapped under software control.

Best for

General-purpose research spectroscopy, photoluminescence, detector spectral response calibration and tunable-source monochromation.

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Specifications

Focal length: 200 / 320 / 500 / 750 mm
Aperture ratio: f/3.5, f/4.2, f/6.5, f/9.7
Resolution (PMT): 0.15 / 0.08 / 0.05 / 0.03 nm
Resolution (CCD, 26 µm): 0.27 / 0.173 / 0.11 / 0.077 nm
Dispersion: 3.58 / 2.29 / 1.49 / 1.02 nm/mm
Wavelength accuracy: ±0.2 nm (all models)
Wavelength repeatability: ±0.1 nm (200i), ±0.025 nm (320/500/750)
Step size: 0.01 nm (200i), 0.005 nm (320/500/750)
Stray light: 5×10⁻⁵ (200i), 1×10⁻⁵ (320/500/750)
Focal plane size: 30 (w) × 14 (h) mm
Optical axis height: 146 mm
Slit: Width 0.01–3 mm, motorised or manual; height 2, 4 or 14 mm selectable
Grating size: 50 × 50 mm (200i), 68 × 68 mm (320/500/750)
Grating mount: Dual turret (200i), interchangeable triple turret (320/500/750)
Interface: USB 2.0 (200i); USB 2.0 and RS232 (320/500/750)
Dimensions: 300×216×213 / 420×295×232 / 550×288×220 / 800×338×218 mm
Weight: 14 / 16 / 22 / 32.5 kg