Paper
19 July 2019 Zero roll-off retinal MHz-OCT using an FDML-laser
Julian Klee, Jan Philip Kolb, Christin Grill, Wolfgang Draxinger, Tom Pfeiffer, Robert Huber
Author Affiliations +
Abstract
Optical coherence tomography (OCT) applications like ultra-widefield and full eye-length imaging are of high interest for various diagnostic purposes. In swept-source OCT these techniques require a swept light source, which is coherent over the whole imaging depth. We present a zero roll-off 1060 nm Fourier Domain Mode Locked-Laser (FDML-Laser) for retinal OCT imaging at 1.7 MHz A-scan rate and first long-range imaging results with it. Several steps such as improved dispersion compensation and frequency regulation were performed and will be discussed. Besides virtually no loss in OCT signal over the maximum depth range of 4.6 mm and very good dynamic range was observed. Roll-off measurements show no decrease of the point-spread function (PSF), while maintaining a high dynamic range.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Julian Klee, Jan Philip Kolb, Christin Grill, Wolfgang Draxinger, Tom Pfeiffer, and Robert Huber "Zero roll-off retinal MHz-OCT using an FDML-laser", Proc. SPIE 11078, Optical Coherence Imaging Techniques and Imaging in Scattering Media III, 110780S (19 July 2019); https://doi.org/10.1117/12.2527034
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KEYWORDS
Optical coherence tomography

Point spread functions

Scanners

Imaging systems

Range imaging

Coherence (optics)

Photodiodes

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