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25 April 2024

» arxiv » cond-mat/0412044

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Time-resolved broadband analysis of slow-light propagation and superluminal transmission of electromagnetic waves in three-dimensional photonic crystals
J. Gomez Rivas ; A. Farre Benet ; J. Niehusmann ; P. Haring Bolivar ; H. Kurz ;
Date:	2 Dec 2004
Journal:	Phys. Rev. B 71, 155110 (2005) DOI: 10.1103/PhysRevB.71.155110
Subject:	Materials Science \| cond-mat.mtrl-sci
Affiliation:	Institut fuer Halbleitertechnik, RWTH-Aachen University, Germany
Abstract:	A time-resolved analysis of the amplitude and phase of THz pulses propagating through three-dimensional photonic crystals is presented. Single-cycle pulses of THz radiation allow measurements over a wide frequency range, spanning more than an octave below, at and above the bandgap of strongly dispersive photonic crystals. Transmission data provide evidence for slow group velocities at the photonic band edges and for superluminal transmission at frequencies in the gap. Our experimental results are in good agreement with finite-difference-time-domain simulations.
Source:	arXiv, cond-mat/0412044
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