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Triple Monochromator for Raman, Subtractive and Additive Dispersion Stages
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Three-stage monochromator for UV-excited and low-wavenumber Raman measurements.
This triple spectrometer links three finely aligned image-corrected monochromators. The first two stages work in subtractive dispersion to suppress stray light, and the last two work in additive dispersion to increase resolution. With tunable wavelength and an adjustable notch, it is used mainly for demanding Raman measurements such as UV-excited and low-wavenumber Raman, and it can also run as a single, double or triple monochromator.
Key Features
- Three image-corrected monochromators in series
- First two stages in subtractive dispersion mode for stray light reduction
- Last two stages in additive dispersion mode for higher spectral resolution
- Selectable single, double or triple monochromator operation
- Tunable wavelength with adjustable notch
- Uses 68 × 68 mm holographic or ruled gratings (datasheet grating table: 50–3600 g/mm)
Typical Applications
- UV-excited Raman spectroscopy
- Low-wavenumber Raman spectroscopy
- Weak-signal spectroscopy requiring high stray light rejection
- High-resolution spectral measurements
Related Products
- Omni-λ Series — Monochromators and Spectrographs
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- Omni-iSpecT — VPH Raman Spectrograph
Browse all: Monochromators & Spectrographs · Spectroscopic Instruments
Model: Triple Monochromator · Contact WaveQuanta for a quote, configuration advice and lead time.
| Configuration | Three image-corrected monochromators |
| Stage Coupling | Stages 1–2 subtractive (stray light); stages 2–3 additive (resolution) |
| Operating Modes | Single, double or triple monochromator |
| Notch | Adjustable, with tunable wavelength |
| Grating Size | 68 × 68 mm |
| Holographic Grating Options | 1200–3600 g/mm, blaze 250–700 nm, coverage 180–1200 nm |
| Ruled Grating Options | 50–2400 g/mm, blaze 240 nm–12 µm, coverage 190 nm–22 µm |
No CAD drawings available for this product.
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Product Family: Monochromators & Spectrographs (5 variants)
| Product | SKU | Size | Clear Aperture | Operating Wavelength | |
|---|---|---|---|---|---|
| Omni-λ180Di, 300Di, 500Di Double Monochromators, Stray Light to 1×10⁻⁹ |
Omni-λ300Di / Omni-λ500Di / Omni-λ180Di
| — | — | — | Contact |
| Omni-iSpecT VPH Raman Spectrograph, F/2.3, 532 nm and 785 nm Versions |
Omni-iSpecT
| — | — | — | Contact |
| Triple Monochromator for Raman, Subtractive and Additive Dispersion Stages Current |
Triple Monochromator
| — | — | — | |
| HiperS-320i Aberration-Free Imaging Spectrometer, 320 mm, On-Axis Turret |
HiperS-320i
| — | — | — | Contact |
| Omni-λ Series Monochromators and Spectrographs, 200–750 mm Focal Length |
Omni-λ Series
| — | — | — | Contact |