2006/03/01 by Li‐Gang Wang, Li-Gang Wang, Shi-Yao Zhu
Engineering · Physics and Astronomy · #Optical Network Technologies #Photonic Crystals and Applications #Quantum optics and atomic interactions #physics.optics
paper · pdf · doi:10.1103/physrevb.73.195119
18 pages, 4 figures
arxiv created 2006/03/01 · openalex publication_date 2006/05/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The dynamics of two-dimensional electromagnetic (EM) pulses through one-dimensional photonic crystals (1DPC) has been theoretically studied. Employing the time expectation integral over the Poynting vector as the arrival time [Phys. Rev. Lett. 84, 2370 (2000)], we show that the superluminal tunneling process of EM pulses is the propagation of the net forward-going Poynting vector through the 1DPC, and the Hartman effect is due to the saturation effect of the arrival time (smaller and smaller time accumulated) of the net forward energy flow caused by the interference effect of the forward and the backward field (from the interfaces between layers), which occurred in the region before the 1DPC and in the front part of the 1DPC.