Influence of the apparatus on the intensity ratio of the measured Raman peaks

Kang He; Zhehao Xu; Xue Zhang; Quanshui Li; Fengping Wang

doi:10.1016/j.saa.2022.122249

Influence of the apparatus on the intensity ratio of the measured Raman peaks

Spectrochim Acta A Mol Biomol Spectrosc. 2023 Mar 15:289:122249. doi: 10.1016/j.saa.2022.122249. Epub 2022 Dec 15.

Authors

Kang He¹, Zhehao Xu¹, Xue Zhang¹, Quanshui Li², Fengping Wang¹

Affiliations

¹ Department of Applied Physics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China.
² Department of Applied Physics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China. Electronic address: qsli@ustb.edu.cn.

PMID: 36549072
DOI: 10.1016/j.saa.2022.122249

Abstract

We report an analytic result about the influence of the apparatus on the intensity ratio of the Raman peaks. This ratio of the Raman peak with the larger linewidth to the one with the smaller linewidth will increase with the increasing width of the instrument response function and the linewidth of the incident laser. For the applications of the empirical equations based on the intensity ratio of Raman peaks, the spectral resolution of the instrument should be indicated, and the fitting associated with a measured instrument response function is recommended.

Keywords: Convolution; Instrument response function; Intensity ratio; Raman spectroscopy; Voigt.