1. >400 kHz repetition rate wavelength-swept laser and application to high-speed optical frequency domain imaging

    >400 kHz repetition rate wavelength-swept laser and application to high-speed optical frequency domain imaging
    We demonstrate a high-speed wavelength-swept laser with a tuning range of 104nm (1228–1332nm) and a repetition rate of 403kHz. The design of the laser utilizes a high-finesse polygon-based wavelength-scanning filter and a short-length unidirectional ring resonator. Optical frequency domain imaging of the human skin in vivo is presented using this laser, and the system shows sensitivity of higher than 98dB with single-side ranging depth of 1.7mm over 4dB sensitivity roll-off.
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