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- Title
Reconstrucción del espectroRamanmediante la sustracción de la línea base usando las funciones de Huber y cuadrática truncada.
- Authors
Garzón-Ramos, D. A.; Belalcazar-Bolaños, E. A.; Orozco-Arroyave, J. R.; Vargas-Bonilla, J. F.; Vargas-Hernández, C.
- Abstract
From the behaviour of the Raman emission spectrum, it is possible to obtain structural and compositional information of the material under study. Analysis of this information is made difficult due to low intensities of the signal, relative to noise in measurement process, and the signals generated by the nature of the compounds. Raman spectra are composed of overlapping emission bands associated with the samples, and the noise generated by fluorescence, which constitutes the baseline. The useful information is screened by the fluorescence, hiding emission peaks, which are assigned to the normal modes of vibration of low intensity. Signal processing techniques, and pattern recognition that allow to reconstruct the Raman spectrum of ZnO by subtracting the fluorescence signal, are presented in this work. In the linearizing, the Huber and the truncated quadratic functions are used, both symmetric and asymmetric, the baseline is adjusted to a lower-order polynomial.
- Publication
Revista Colombiana de Física, 2014, Vol 46, Issue 1, p1
- ISSN
0120-2650
- Publication type
Article