Terahertz transmission through ensembles of subwavelength-size metallic particles
作者： K. J. Chau , A. Y. Elezzabi
DOI: 10.1103/PHYSREVB.72.075110
关键词:
摘要: We demonstrate that terahertz radiation can coherently propagate through dense ensembles of subwavelength-size metallic particles over distances are orders magnitude greater than the skin depth. Collectively, metal particle behave similar to a dispersive lossy dielectric. To fully explore this phenomenon, we investigate effects size, shape, type, and conductivity on temporal characteristics transmitted radiation. In addition, show transmission preserves incident polarization state. Such an observation indicates electromagnetic energy propagation across extent ensemble is coherent nature. Finite difference time domain simulations wave in random media support experimental observations transport due near-field plasmonic coupling between particles.
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