Physics – Condensed Matter – Materials Science
Scientific paper
2004-12-02
Phys. Rev. B 71, 155110 (2005)
Physics
Condensed Matter
Materials Science
7 pages, 11 figures
Scientific paper
10.1103/PhysRevB.71.155110
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.
Benet Farre A.
Bolivar Haring P.
Gómez Rivas J.
Kurz Heinrich
Niehusmann J.
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