Spectroscopic identification of materials with calibrated full-field optical coherence tomography in the visible range
FRIGERIO, Jean-Marc
Biodiversité, Gènes & Communautés [BioGeCo]
Institut des Nanosciences de Paris [INSP]
Biodiversité, Gènes & Communautés [BioGeCo]
Institut des Nanosciences de Paris [INSP]
FRIGERIO, Jean-Marc
Biodiversité, Gènes & Communautés [BioGeCo]
Institut des Nanosciences de Paris [INSP]
< Leer menos
Biodiversité, Gènes & Communautés [BioGeCo]
Institut des Nanosciences de Paris [INSP]
Idioma
en
Communication dans un congrès avec actes
Este ítem está publicado en
OPTICAL MICRO- AND NANOMETROLOGY IV, 2012, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA. 2012, vol. 8430
SPIE-INT SOC OPTICAL ENGINEERING
Resumen en inglés
For twenty years Optical Coherence Tomography (OCT) has been interested in imaging in turbid media. Recently, conventional OCT has been extended to spectroscopic investigation (SOCT). For a full-field OCT configuration in ...Leer más >
For twenty years Optical Coherence Tomography (OCT) has been interested in imaging in turbid media. Recently, conventional OCT has been extended to spectroscopic investigation (SOCT). For a full-field OCT configuration in the visible range, we show that the interference conditions are not equal in the whole field of view: the effective numerical aperture depends on the observation point. This results in a spectral shift towards higher wavelengths of the OCT spectra, leading to errors in spectroscopic analysis. We propose a general calibration method for SOCT measurements which has been tested within a protocol, to perform spatially-resolved spectroscopic identification of material by OCT. Firstly we measure the reflectivity of a plane gold sample, corresponding closely to the measurement made with a spectrometer. Then we successfully identify the reflectivity of gold in a mixed sample (silicon and gold).< Leer menos
Palabras clave en inglés
Optical coherence tomography
Spectroscopy
Calibration
Micro-spectrometry
Identification
Orígen
Importado de HalCentros de investigación