Chinese Optics Letters, 2013, 11 (8): 082401, Published Online: Aug. 6, 2013
Zero-dispersion waveguide of sub-skin-depth terahertz plasmons using metallic nanowires Download: 553次
Abstract
Global change in the dispersive behavior of terahertz (THz) plasmons on metal wires with wide radii ranging from 5 nm to 0.5 mm is systematically investigated. Through rigorous numerical calculations, we find that the dispersion of a metal wire with a radius of 5 nm increases by about 4-6 orders of magnitude compared with the case of a metallic wire with a radius of 0.5 mm. Zero-dispersion points appear when the frequency is lower than 3 THz, and the positions of the zero-dispersion points can shift with the frequency. Finally, we provide an explicit expression that agrees very well with the numerical calculations.
Jie Yang, Yueping Niu, Gongwei Lin, Yihong Qi, Shangqing Gong. Zero-dispersion waveguide of sub-skin-depth terahertz plasmons using metallic nanowires[J]. Chinese Optics Letters, 2013, 11(8): 082401.