40 MHz Swept-Source Optical Coherence Tomography at 1060 nm Using a Time-Stretch and Supercontinuum Spectral Broadening Dynamics

We present an akinetically swept light source based on a spectrally broadened mode-locked laser in all normal dispersion optical fiber followed by linear dispersive time stretch and regenerative amplification stage. Developed for ultrafast swept-source coherence tomography (SS-OCT), the enables demonstration of A-scan rate at 40 MHz with 12 μm axial resolution. Through A-scans captured from fast-moving object, we demonstrate that high-speed OCT is possible 1 wavelength architecture which not intrinsically bandwidth limited. The therefore shows promising route to achieving high resolution OCT.