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Depth-resolved local reflectance spectra measurements in full-field optical coherence tomography

Claveau, R; Montgomery, P; Flury, M; Montaner, D; (2017) Depth-resolved local reflectance spectra measurements in full-field optical coherence tomography. Optics Express , 25 (17) pp. 20216-20232. 10.1364/OE.25.020216. Green open access

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Abstract

Full-field optical coherence tomography (FF-OCT) is a widely used technique for applications such as biological imaging, optical metrology, and materials characterization, providing structural and spectral information. By spectral analysis of the backscattered light, the technique of spectroscopic-OCT enables the differentiation of structures having different spectral properties, but not the determination of their reflectance spectrum. For surface measurements, this can be achieved by applying a Fourier transform to the interferometric signals and using an accurate calibration of the optical system. An extension of this method is reported for local spectroscopic characterization of transparent samples and in particular for the determination of depth-resolved reflectance spectra of buried interfaces. The correct functioning of the method is demonstrated by comparing the results with those obtained using a program based on electromagnetic matrix methods for stratified media. Experimental measurements of spatial resolutions are provided to demonstrate the smallest structures that can be characterized.

Type: Article
Title: Depth-resolved local reflectance spectra measurements in full-field optical coherence tomography
Open access status: An open access version is available from UCL Discovery
DOI: 10.1364/OE.25.020216
Publisher version: https://doi.org/10.1364/OE.25.020216
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Spectroscopy
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: http://discovery.ucl.ac.uk/id/eprint/10075213
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