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9 March 2023 1.0-μm broadband dispersion-compensated stretched-pulse mode locking wavelength-swept source for in-vivo retinal OCT imaging
Gyeong Hun Kim, Seong Jin Bak, Tae Joong Eom, Chang-Seok Kim
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Proceedings Volume PC12367, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVII; PC1236706 (2023) https://doi.org/10.1117/12.2650923
Event: SPIE BiOS, 2023, San Francisco, California, United States
Abstract
We demonstrated the long coherence 1.0-μm stretched-pulse mode locking wavelength-swept source based on a precise dispersion compensation using chirped fiber Bragg grating (CFBG). In the optical pulse width of 72 ps, the optical bandwidth was 97 nm, and the coherence length was 5.0 mm. We also obtained ultra-high speed in-vivo human retinal optical coherence tomography images with a 5-MHz A-line rate. Because the dispersion profile of CFBG was designed to be linear in wavenumber, the wavenumber linearity of this laser is 0.9999997 (R2), which avoided the use of interpolation during real-time imaging.
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Gyeong Hun Kim, Seong Jin Bak, Tae Joong Eom, and Chang-Seok Kim "1.0-μm broadband dispersion-compensated stretched-pulse mode locking wavelength-swept source for in-vivo retinal OCT imaging", Proc. SPIE PC12367, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVII, PC1236706 (9 March 2023); https://doi.org/10.1117/12.2650923
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KEYWORDS
Dispersion
Optical coherence tomography
Mode locking
In vivo imaging
Retinal scanning
Coherence imaging
Laser resonators
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