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Proceedings Paper

High-speed Fourier-domain optical coherence tomography using a chirped supercontinuum pulse source
Author(s): Sucbei Moon; Dongsoo Lee; Dug Y. Kim
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Paper Abstract

We have demonstrated a Fourier-domain optical coherence tomography (FD-OCT) scheme with a high-speed frequency-swept light source based on a chirped supercontinuum pulse. Instead of using a swept laser, an ultra-wideband supercontinuum pulse was chirped or stretched in the time domain by using a long dispersive single-mode optical fiber by the help of the group velocity dispersion. The chirped pulse was used directly as frequency-swept light for OCT after measuring the relationship between the time delay and the wavelength. Very high acquisition speeds up to 5-MHz in A-line scan rate were achieved because there is no speed-limiting moving part in this scheme. And high resolution up to 3.6 &mgr;m in air was enabled owing to the use of wideband supercontinuum. It was shown that the scheme does not require re-calibration of the sweep characteristics because the sweeping mechanism is passive and stable.

Paper Details

Date Published: 7 February 2007
PDF: 8 pages
Proc. SPIE 6429, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI, 64291E (7 February 2007); doi: 10.1117/12.703132
Show Author Affiliations
Sucbei Moon, Gwangju Institute of Science and Technology (South Korea)
Dongsoo Lee, Gwangju Institute of Science and Technology (South Korea)
Dug Y. Kim, Gwangju Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 6429:
Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI
James G. Fujimoto; Joseph A. Izatt; Valery V. Tuchin, Editor(s)

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