Coherence Spectrotomography: Optical Spectroscopic Tomography with Low-Coherence Interferometry

Assessment of spectroscopic imaging with spectroscopic optical coherence tomography

“…In our analysis, the spectral density reflected from multi-layer structure is expressed as follows, (2) where τ n denotes the time delay of back-reflected or back-scattered light to the reference light, and R n (λ), and ) (λ φ n denote spectral domain reflection index and the phase difference, respectively between signal and reference lights at the delay τ n . The coherence function obtained using the Fourier transform is given as follows,…”

“…Recently, a new technique called spectroscopic OCT has been receiving much attention [1,2]. This technique has an advantage that the spectroscopic information can be acquired at multiple wavelengths across the available bandwidth of the light source in a single measurement.…”

SpectroscopicOCT by Grating‐Based Temporal Correlation Coupled to OpticalSpectral Analysis

“…Works have recently been performed which demonstrate optically processed spectroscopic OCT images [4, 6] in the frame of classical time domain OCT using wavelength demultiplexing.…”

“…Then new functionalities in OCT systems have been investigated. They are mainly as follows: polarization OCT imaging [ 3 ] accesses tissues properties (structural organization), spectroscopic OCT [ 4 ] accesses in vivo local tissue (or cell) absorption that informs on cell metabolism or molecule disorders, CARS-OCT [ 5 ] accesses tissues spectral features in the range of Raman spectrum (molecules vibrational spectra). …”

“…spectroscopic OCT [ 4 ] accesses in vivo local tissue (or cell) absorption that informs on cell metabolism or molecule disorders,…”