Control of superluminal transit through a heterogeneous medium

Details Control of superluminal transit through a heterogeneous medium Control of superluminal transit through a heterogeneous medium

2007-11-27

arxiv.org/abs/0711.4159v2

Journal of Modern Optics, 10 March 2004, Vol 51, No. 4, 549-557

Physics

Optics

21 Pages,5 Figures (Published in Journal of Modern Optics)

Scientific paper

10.1080/09500340408238067

We consider pulse propagation through a two component composite medium (metal inclusions in a dielectric host) with or without cavity mirrors. We show that a very thin slab of such a medium, under conditions of localized plasmon resonance, can lead to significant superluminality with detectable levels of transmitted pulse. A cavity containing the heterogeneous medium is shown to lead to subluminal-to-superluminal transmission depending on the volume fraction of the metal inclusions. The predictions of phase time calculations are verified by explicit calculations of the transmitted pulse shapes. We also demonstrate the independence of the phase time on system width and the volume fraction under specific conditions.

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