Separating the scattering and absorption coefficients using the real and imaginary parts of the refractive index with low-coherence interferometry.
Data(s) |
01/09/2010
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Formato |
2843 - 2845 |
Identificador |
http://www.ncbi.nlm.nih.gov/pubmed/20808343 205161 Opt Lett, 2010, 35 (17), pp. 2843 - 2845 http://hdl.handle.net/10161/4225 1539-4794 |
Idioma(s) |
ENG en_US |
Relação |
Opt Lett Optics Letters |
Tipo |
Journal Article |
Cobertura |
United States |
Resumo |
We present an analytical method that yields the real and imaginary parts of the refractive index (RI) from low-coherence interferometry measurements, leading to the separation of the scattering and absorption coefficients of turbid samples. The imaginary RI is measured using time-frequency analysis, with the real part obtained by analyzing the nonlinear phase induced by a sample. A derivation relating the real part of the RI to the nonlinear phase term of the signal is presented, along with measurements from scattering and nonscattering samples that exhibit absorption due to hemoglobin. |
Palavras-Chave | #Absorption #Interferometry #Light #Scattering, Radiation #Time Factors |