Raman Tools
Spectral Range Calculator
The detector registers a specific wavelength range (nm). This calculator converts it into a Raman shift range (cm⁻¹) for your laser and indicates which diagnostic bands are visible within it — and which ones you will miss.
Laser
Detector range (wavelength)
Which diagnostic bands are you capturing?
Key regions of the Raman spectrum and whether they fall within your range.
Conversely: what detector do I need?
Provide the target shift range — we will calculate the required detector wavelength range for the selected laser.
Spectrally does this. Not capturing the band range that matters to you? Let’s discuss your case — we will select the laser and detector for your measurement.
How it works — and why 1064 nm „does not see" high shifts
Δν̃ [cm⁻¹] = 10⁷ · ( 1/λ₀ − 1/λ )
The longer the laser wavelength (e.g., 1064 nm), the faster the Stokes side shifts into the infrared — and silicon CCDs stop being sensitive to light there. This is why 1064 nm systems often do not reach the full C–H / O–H stretching region (2800–3700 cm⁻¹), even though they produce less fluorescence. This is a real trade-off when selecting an instrument.
Reference bands: lattice/low 100–400, „fingerprint" 400–1800, triple/double bonds 1900–2600, C–H 2800–3100, O–H / N–H 3100–3700 cm⁻¹.
Have a sample you don’t want to guess about?
We conduct feasibility studies even on the most challenging samples — on your material, at your site. Leave your contact, and we will review your case and tell you directly whether Spectrally can measure it.
