What this workflow helps you do
Detect Raman spectral peaks and review them against the measured curve before using positions for material comparison or interpretation. The workflow emphasizes baseline and fluorescence because they can dominate weak Raman features.
Use this workflow when
- Creating a reviewed Raman peak list.
- Comparing peak positions between samples or treatments.
- Finding spectral features before labeling or external reference comparison.
What you need before you start
- A Raman spectrum with a known Raman-shift axis and intensity signal.
- Sufficient spectral resolution and signal-to-noise for the features of interest.
- Awareness of strong fluorescence background or cosmic-ray artifacts when present.
Step-by-step workflow
- Import the Raman spectrum and verify the shift and intensity columns.
- Inspect fluorescence background, spikes and noise before running peak detection.
- Choose a suitable sensitivity and apply baseline processing only when justified.
- Detect peaks and compare each important candidate with the original spectrum.
- Review closely spaced or shoulder features before treating them as separate peaks.
- Keep the reviewed peak list and annotate or export only the features relevant to the analysis.
What to review in the result
- Detected peaks correspond to real spectral features rather than spikes or background variation.
- Peak positions use the correct shift unit.
- Close features are not over-resolved by sensitivity alone.
- Baseline treatment does not remove broad Raman bands.
Before you report or export
- Keep processing settings with reported peak positions.
- Use reference spectra or literature for identification rather than relying on position alone.
- Compare samples using consistent processing when possible.
Limitations and interpretation
- Fluorescence can obscure weak Raman bands and distort peak detection.
- Cosmic rays or isolated spikes can look like narrow peaks.
- Peak position alone is not a unique material identification.