Shifted-excitation Raman difference spectroscopy for in vitro and in vivo biological samples analysis

The contamination of the Raman scattering signal with luminescence is a well-known problem when dealing with biological media excited by visible light. The viability of the shifted-excitation Raman difference spectroscopy (SERDS) technique for luminescence suppression on Raman spectra of biological...

Descripción completa

Detalles Bibliográficos
Autores principales: da Silva Martins, Mário Augusto, Ribeiro, Dayana Gonçalves, Pereira dos Santos, Edson Aparecido, Martin, Airton Abrahão, Fontes, Adriana, da Silva Martinho, Herculano
Formato: Texto
Lenguaje:English
Publicado: Optical Society of America 2010
Materias:
Spectroscopic Diagnostics
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3018003/
https://www.ncbi.nlm.nih.gov/pubmed/21258495
http://dx.doi.org/10.1364/BOE.1.000617
Descripción
Sumario:The contamination of the Raman scattering signal with luminescence is a well-known problem when dealing with biological media excited by visible light. The viability of the shifted-excitation Raman difference spectroscopy (SERDS) technique for luminescence suppression on Raman spectra of biological samples was studied in this work. A tunable Lithrow-configuration diode laser (λ = 785 and 830 nm) coupled (directly or by optical fiber) to a dispersive Raman spectrometer was employed to study two sets of human tissues (tooth and skin) in order to determine the set of experimental parameters suitable for luminescence rejection. It was concluded that systematic and reproducible spectra of biological interest can be acquired by SERDS.

Ejemplares similares