High-resolution spectroscopy combined with optical frequency comb and heterodyne detection method

We have proposed high resolution spectroscopy based on an optical frequency comb and heterodyne detection method, whose measurement frequency range has already achieved to be 3 THz (1530 nm~1560 nm) with a spectral resolution of less than 1 MHz. Also, the absolute frequency axis is guaranteed less than 1 MHz. In this presentation, we will show the experimental results including dynamic range of the proposed system.