Lawman S, Dong Y, Williams BM, Romano V, Kaye S, Harding SP, Willoughby C, Shen YC, Zheng Y. High resolution corneal and single pulse imaging with line field spectral domain optical coherence tomography. Optics express. 2016 May 30;24(11):12395-405.
https://opg.optica.org/oe/fulltext.cfm?uri=oe-24-11-12395&id=341079
Abstract
We report the development of a Spectral Domain Line Field Optical Coherence Tomography (LF-OCT) system, using a broad bandwidth and spatial coherent Super-Continuum (SC) source. With conventional quasi-Continuous Wave (CW) setup we achieve axial resolutions up to 2.1 μm in air and 3D volume imaging speeds up to 213 kA-Scan/s. Furthermore, we report the use of a single SC pulse, of 2 ns duration, to temporally gate an OCT B-Scan image of 70 A-Scans. This is the equivalent of 35 GA-Scans/s. We apply the CW setup for high resolution imaging of the fine structures of a human cornea sample ex-vivo. The single pulse setup is applied to imaging of a coated pharmaceutical tablet. The fixed pattern noise due to spectral noise is removed by subtracting the median magnitude A-Scan. We also demonstrate that the Fourier phase can be used to remove aberration caused artefacts.
