Spectral and time domain optical coherence spectroscopy

•Optical coherence tomography (OCT) allows for 3D imaging of living tissue.•OCT can be modified to provide spectroscopic information (sOCT - spectroscopic OCT).•Spectral and time domain optical coherence spectroscopy is a new sOCT technique.•STdOCS can be regarded as a bridge between OCT and Fourier...

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Bibliographic Details
Published in:Optics and lasers in engineering 2020-10, Vol.133, p.106120, Article 106120
Main Authors: Tamborski, Szymon, Wróbel, Krystian, Bartuzel, Maciej M., Szkulmowski, Maciej
Format: Article
Language:English
Subjects:
Fourier transform
Optical coherence tomography
Spectroscopy
Time-frequency analysis
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Summary:•Optical coherence tomography (OCT) allows for 3D imaging of living tissue.•OCT can be modified to provide spectroscopic information (sOCT - spectroscopic OCT).•Spectral and time domain optical coherence spectroscopy is a new sOCT technique.•STdOCS can be regarded as a bridge between OCT and Fourier transform spectroscopy. We propose a novel method for spectroscopic optical coherence tomography (OCT). This method uses the dependence of the Doppler frequency spectrum on the wavenumber. Controlled modulation of the light in the spectral OCT interferometer allows for an instantaneous depth-resolved reconstruction of the backscattered light spectrum from all depths. The feasibility of the spectroscopic analysis using the proposed scheme was confirmed experimentally.
ISSN:0143-8166
1873-0302
DOI:10.1016/j.optlaseng.2020.106120