ABSTRACT
Full-field optical coherence tomography (FF-OCT) is based on a
Michelson interferometer illuminated by a spatially and temporally
incoherent source. Acquisition with a digital camera of transverse
(en face) tomographic images at the output of the interferometer
allows 3D imaging of a sample, including ex vivo biological tissues.
Ultrahigh resolution in the three dimensions as low as 1 μm
can be achieved by adding microscope objectives in the arms
of the interferometer. Spectroscopic FF-OCT is an extension of
this technique where cross-sectional tomographic imaging and
spectroscopic data are acquired simultaneously. In this chapter, we
will show how information on the spectral content of backscattered
light can be obtained by processing the OCT interferometric signal
as it is classically done in a Fourier transform spectrometer, but
with the added benefit of keeping the ultrahigh spatial resolution
in the tomographic images. Influence of some key data processing
parameters is simulated and discussed. Some experimental spectra
reconstruction from tomographic data will be shown.
