Slow and stopped light in metamaterials: the trapped rainbow

Kosmas L. Tsakmakidis; Ortwin Hess

doi:10.1117/12.786348

6 May 2008 Slow and stopped light in metamaterials: the trapped rainbow

Kosmas L. Tsakmakidis, Ortwin Hess

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Proceedings Volume 6987, Metamaterials III; 698702 (2008) https://doi.org/10.1117/12.786348
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

We show how guided electromagnetic waves propagating along an adiabatically tapered negative-refractive-index metamaterial heterostructure can be brought to a complete halt. It is analytically shown that, in principle, this method simultaneously allows for broad bandwidth operation (since it does not rely on group index resonances), large delay-bandwidth products (since a wave packet can be completely stopped and buffered indefinitely) and high, almost 100%, in/out-coupling efficiencies. By nature, the presented scheme invokes solid-state materials and, as such, is not subject to low-temperature or atomic coherence limitations. A wave analysis, which demonstrates the halting of a monochromatic field component travelling along the heterostructure, is followed by a pertinent ray analysis, which unmistakably illustrates the trapping of the associated light-ray and the formation of a double light-ray cone ('optical clepsydra') at the point where the ray is trapped. This method for trapping photons conceivably opens the way to a multitude of hybrid optoelectronic devices to be used in 'quantum information' processing, communication networks and signal processors and may herald a new realm of combined metamaterials and slow light research.

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Kosmas L. Tsakmakidis and Ortwin Hess "Slow and stopped light in metamaterials: the trapped rainbow", Proc. SPIE 6987, Metamaterials III, 698702 (6 May 2008); https://doi.org/10.1117/12.786348

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KEYWORDS

Waveguides

Heterojunctions

Dielectrics

Metamaterials

Radio propagation

Wave propagation

Signal processing

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