Different spectral parameters such as ID/IG, R2, are calculated to analyze Raman spectra. Is there any freeware/excel spreadsheet from which I can calculate these parameters from raw spectral data? Also I need to know, how G and D peak positions are identified from raw spectral data stating Raman shift (cm-1) and Intensity (cps).
I couldn't understand your question properly whether you are asking for fitting the data or you want to assign your peaks from your raw data. For calculating all the parameters starting from your peak position, FWHM, intensity first you have to do a background correction. After that in any of fitting software you can fit all the peaks then for every peak fit you will get all the required parameters. Then you can write all the parameters in an excel sheet.
Hello Trisrota,
A couple of free software packages you can use are Origin and SpectraGryph. These can be used to get all sorts of Raman parameters including peak positions and intensity. The data can then easily be exported to Excel.
http://www.effemm2.de/spectragryph/
Thanks
Adam
Shradhanjali Sahoo: I want to first identify the peaks from raw data. What background corrections I need to do for that?
Trisrota:
1) Baseline the data.
2) Subtract this baseline.
3) Smooth the data to decrease noise (optional).
4) Peak fit to find peak postions.
All this can be done within 10 minutes on the Spectragryph software I mentioned above.
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