Multi-MHz FDML OCT: snapshot retinal imaging at 6.7 million axial-scans per second

Thomas Klein; Wolfgang Wieser; Raphael André; Tom Pfeiffer; Christoph M. Eigenwillig; Robert Huber

doi:10.1117/12.908798

17 February 2012 Multi-MHz FDML OCT: snapshot retinal imaging at 6.7 million axial-scans per second

Thomas Klein, Wolfgang Wieser, Raphael André, Tom Pfeiffer, Christoph M. Eigenwillig, Robert Huber

Proceedings Volume 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI; 82131E (2012) https://doi.org/10.1117/12.908798
Event: SPIE BiOS, 2012, San Francisco, California, United States

Abstract

We demonstrate the acquisition of densely sampled wide-field 3D OCT datasets of the human retina in 0.3s. This performance is achieved with a multi-MHz Fourier domain mode-locked (FDML) laser source operating at 1050nm. A two-beam setup doubles the 3.35MHz laser sweep rate to 6.7MHz, which is 16x faster than results achieved with any non-FDML source used for retinal OCT. We discuss two main benefits of these high line rates: First, large datasets over an ultra-wide field of view can be acquired with a low probability of distortions. Second, even if eye movements occur, now the scan rate is high enough to directly correct even the fastest saccades without loss of information.

Citation Download Citation

Thomas Klein, Wolfgang Wieser, Raphael André, Tom Pfeiffer, Christoph M. Eigenwillig, and Robert Huber "Multi-MHz FDML OCT: snapshot retinal imaging at 6.7 million axial-scans per second", Proc. SPIE 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI, 82131E (17 February 2012); https://doi.org/10.1117/12.908798

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