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.
Write to us and learn more
Aleksandra Łukasiewicz
Head of International Sales
- +48 512 554 952 · +1 (804) 593-0282
- a.lukasiewicz@gekkophotonics.com