Fig. 1: Schematic diagram and transmitted characteristics of the terahertz asynchronous twin-comb.
From: Terahertz asynchronous twin-comb for prefiguring hypersensitivity beyond spectrum domain
a Configuration of a terahertz asynchronous twin-comb. b THz-TDS system in experiments. WP Wollaston prism, PCA photoconductive antenna. c Two-dimensional diagram and structural parameters of the terahertz asynchronous twin-comb. PPWG parallel-plate waveguide, PE polyethylene. d Schematic of the four-channel transmission from a cascading dual microchannel. OP means the additional optical path from materials. e Characteristic time-domain series of the terahertz asynchronous twin-comb. Strips with different colors represent the four-channel paths and their transmitted signal. t means the periodic pulse temporal interval. τ means the time defect in the periodic pulse.
