Adaptive Sampling Dual Comb Spectroscopy in Terahertz Region Using Unstabilized Dual Femtosecond Lasers

The adaptive sampling clock was extracted by dual THz-comb-referenced spectrum analyzers and used for THz dual comb spectroscopy (THz-DCS) with unstabilized dual lasers. The demonstrated results implied better spectroscopic performance than THz-DCS with stabilized lasers.