Aperture effect correction in spectroscopic full-field optical coherence tomography.
Spatially resolved spectroscopic optical coherence tomography (OCT) has been demonstrated to be a convenient tool for spectral analysis in turbid media. For a full-field OCT configuration using a Mirau objective in the visible range, we found that the effective numerical aperture varies over the field of view, leading to field-dependent spectral shifts in the reconstructed spectra. Interferograms recorded with quasi-monochromatic lights are theoretically fitted with a general Mirau interference formula, and we propose a numerical correction method for white-light spectroscopy. The method is then tested successfully for the measure of the reflectivity of a plane gold sample.
Université Pierre et Marie Curie, UMR 7588, INSP, 4 Place Jussieu Paris F-75005, France. antoine.morin@insp.jussieu.fr
Antoine
A
Morin
Jean-Marc
JM
Frigerio
D000465:Algorithms; D003198:Computer Simulation; D006046:Gold; D007368:Interferometry; D008027:Light; D008962:Models, Theoretical; D013053:Spectrophotometry / Q000379:methods*; D013535:Suspensions; D041623:Tomography, Optical Coherence / Q000379:methods*
D013535:Suspensions; D006046:Gold