Quasi-real-time dual-comb spectroscopy based on 750-MHz Yb:fiber combs unfolding aliasing down-sampled spectra

Quasi-real-time computational coherent averaging is proposed and applied in the 750-MHz Yb:fiber laser dual comb spectroscopy system. More than three aliasing down-sampled spectra can be distinguished and unfolded due to the well-corrected phase noise.