1. High-Speed Wavelength-Swept Laser Source With High-Linearity Sweep for Optical Coherence Tomography

    High-Speed Wavelength-Swept Laser Source With High-Linearity Sweep for Optical Coherence Tomography
    Summary:This paper reports on a high-speed, wide-range, wavelength-swept laser operating at 1310 nm with highly linear sweep performance for optical coherence tomography (OCT) applications. The simple and robust laser comprises a pigtailed semiconductor optical amplifier and a wavelength-scanning filter in an extended fiber cavity configuration. The tunable filter consists of a diffraction grating and polygon mirror scanner. A photodiode is used to generate a start trigger signal synchronized to start of each frequency sweep. Intracavity prism beam expanders are aligned to provide constant laser linewidth and linear frequency sweep. The laser exhibits a peak power of 15 mW. The ...
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