24 February 2017 A linearly frequency-swept high-speed-rate multi-wavelength laser for optical coherence tomography
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Abstract
We proposed and demonstrated a linearly frequency-swept multi-wavelength laser source for optical coherence tomography (OCT) eliminating the need of wavenumber space resampling in the postprocessing progress. The source consists of a multi-wavelength fiber laser source (MFS) and an optical sweeping loop. In this novel laser source, an equally spaced multi-wavelength laser is swept simultaneously by a certain step each time in the frequency domain in the optical sweeping loop. The sweeping step is determined by radio frequency (RF) signal which can be precisely controlled. Thus the sweeping behavior strictly maintains a linear relationship between time and frequency. We experimentally achieved linear time-frequency sweeping at a sweeping rate of 400 kHz with our laser source.
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Qiyu Wang, Qiyu Wang, Zhaoying Wang, Zhaoying Wang, Quan Yuan, Quan Yuan, Rui Ma, Rui Ma, Tao Du, Tao Du, Tianxin Yang, Tianxin Yang, } "A linearly frequency-swept high-speed-rate multi-wavelength laser for optical coherence tomography", Proc. SPIE 10103, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications X, 101031X (24 February 2017); doi: 10.1117/12.2250876; https://doi.org/10.1117/12.2250876
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