Abstract

Optical coherence tomography (OCT), as an optical interferometric imaging technique, has found wide applications in various fields. In principle, OCT is well suited for imaging layered structures, and thus, one of the typical applications is thickness measurement. However, due to the limited imaging depth resulting from light attenuation, thickness measurement by OCT is limited to non-opaque materials. In this study, we developed a novel (to the best of our knowledge) dual-side view OCT (DSV-OCT) system for thickness measurement on opaque materials. The dual-side view was achieved on a conventional swept source OCT platform by creating two symmetrical sampling arms. This allows us to image both sides of the material simultaneously and produce the surface contours of the two sides in a single C scan. Finally, the thickness of the opaque material can be calculated from the two surface contours above. We demonstrated that our DSV-OCT technique can measure the thickness of opaque material with an accuracy of about 3 µm.

© 2020 Optical Society of America

Miniaturized precalibration-based Lissajous scanning fiber probe for high speed endoscopic optical coherence tomography

Tong Wu, Lei Zhang, Jiming Wang, Wenqi Huo, Yuangang Lu, Chongjun He, and Youwen Liu
Opt. Lett. 45(8) 2470-2473 (2020)

Optically computed optical coherence tomography for volumetric imaging

Yahui Wang, Qi Kang, Yuanwei Zhang, and Xuan Liu
Opt. Lett. 45(7) 1675-1678 (2020)

Dispersion measurements in ocular media using a dual-wavelength swept source optical coherence tomography system

Bastian Bräuer, Stuart G. Murdoch, and Frédérique Vanholsbeeck
Opt. Lett. 41(24) 5732-5735 (2016)

Spectroscopic optical coherence refraction tomography

Kevin C. Zhou, Ruobing Qian, Sina Farsiu, and Joseph A. Izatt
Opt. Lett. 45(7) 2091-2094 (2020)

Ultrathin side-viewing needle probe for optical coherence tomography

D. Lorenser, X. Yang, R. W. Kirk, B. C. Quirk, R. A. McLaughlin, and D. D. Sampson
Opt. Lett. 36(19) 3894-3896 (2011)