Robust and easy-to-operate stretched-pulse mode-locked wavelength-swept laser with an all-polarization-maintaining fiber cavity for 10 MHz A-line rate optical coherence tomography

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We demonstrate robust and easy-to-operate stretched-pulse mode-locked laser (SPML) architectures using all-polarization-maintaining fiber laser cavities. Because of the polarization-maintaining construction, the laser performance is unaffected by mechanical perturbation on the cavity fibers. The lasers automatically initiate linear-in-wavenumber sweeps across 100 nm centered at 1290 nm with a 10 MHz repetition rate. OCT imaging with a sensitivity of 98 dB and a single-sided 6 dB coherence length of 2.5 mm is demonstrated. OCT angiography of a mouse brain that visualized three-dimensional cerebral microvasculature over a field of 1.5 mm x 1.5 mm (398 A-lines x 380 B-scans) at a rate of 5.26 volumes per second is also presented. The robust all-PMF SPML lasers are a turnkey, high-performance source for ultrahigh-speed OCT imaging. (C) 2021 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2021-08
Language
English
Article Type
Article
Citation

OPTICS LETTERS, v.46, no.16, pp.3857 - 3860

ISSN
0146-9592
DOI
10.1364/OL.424835
URI
http://hdl.handle.net/10203/287510
Appears in Collection
ME-Journal Papers(저널논문)
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