The effect of instrumental broadening on FWHM in Raman peaks

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The discussion focuses on extracting the instrumental broadening effect in Raman spectroscopy, particularly its impact on Full Width at Half Maximum (FWHM) measurements. The instrumental broadening can be quantified using the formula Δλ ≈ db/f, where d is the grating spacing, b is the slit width, and f is the focal length of the optics. Participants discuss how to determine the values for these parameters, emphasizing that a small instrumental broadening relative to the FWHM indicates accurate linewidth measurements. Additionally, the relationship between wavelength and Raman shift units is clarified, highlighting the importance of converting units appropriately for error analysis. Understanding these factors is crucial for optimizing Raman peak measurements and ensuring accurate spectral analysis.
  • #31
Thank you very much Charles.

Looking forward to discuss with you more. Have a great day !

Best Regards,
Avra
 
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  • #32
Hi Charles:

Hope you are doing well. I would like to know whether the absorbance efficiency of 532 nm laser used in Raman spectroscopy is independent of temperature. If it is dependent on temperature, then how ?
 

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