18 February 2008 60 MHz A-line rate ultra-high speed Fourier-domain optical coherence tomography
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Abstract
We describe a high-speed Fourier domain optical coherence tomography (OCT) using optical de-multiplexers for spectral dispersion of interferograms. The optical de-multiplexer enables to separate 256 narrow spectral bands from a broadband incident light in 25.0 GHz frequency interval centered at 192.2 THz (1559.8 nm) and allows simultaneous detection of all the bands at the speed of DAQ. Using the optical de-multiplexers into a Fourier domain OCT system as spectral analyzers, OCT imaging of 60,000,000 axial scans per second has been achieved. Using a resonant scanner for lateral scan, 16 kHz frame rate, 1400 A-lines per frame, 3 mm depth range, 23 micron meter resolution OCT imaging has been demonstrated.
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K. Ohbayashi, D. Choi, H. Hiro-Oka, H. Furukawa, R. Yoshimura, M. Nakanishi, K. Shimizu, "60 MHz A-line rate ultra-high speed Fourier-domain optical coherence tomography", Proc. SPIE 6847, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII, 68470M (18 February 2008); doi: 10.1117/12.764133; https://doi.org/10.1117/12.764133
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