Broadband Terahertz Signal Processing and Multiplexing with Four-wire Waveguides

We demonstrate a new waveguide geometry, namely a four-wire waveguide, which acts as a terahertz polarization-division multiplexer and a novel platform to realize versatile signal-processing functionalities into independent channels over a broadband terahertz frequency range.

UV parametric generation via quasi-phase-matching in Lithium Tantalate waveguides