Anderson localization in terahertz plasmonic waveguides

We present the first experimental demonstration of spatial localization (Anderson localization) of terahertz waves in plasmonic structures. The effect is brought upon by inclusion of disorder in a one dimensional plasmonic lattice. We discuss the effect of disorder on the propagation properties of the waveguide, the appearance of new modes beyond the stop band, and their transport properties. We also measure the spatial properties of the localized mode and compare the localization length to other experimental demonstrations. The results are consistent with prior published theoretical works.