Exceptional reduction of the diffusion constant in partially disordered photonic crystals

Exceptional reduction of the diffusion constant in partially disordered photonic crystals

In real photonic crystals light is scattered by the imperfections of the periodic potential. We study experimentally the propagation of diffused light in silicon inverse opals and report an exceptionally reduced diffusion constant of 3.0+/-0.7 m(2)/s, in samples which are only partially disordered....

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Veröffentlicht in:Physical review letters 2008-09, Vol.101 (12), p.123901-123901, Article 123901
Hauptverfasser: Toninelli, Costanza, Vekris, Evangellos, Ozin, Geoffrey A, John, Sajeev, Wiersma, Diederik S
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container_title Physical review letters
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creator Toninelli, Costanza
Vekris, Evangellos
Ozin, Geoffrey A
John, Sajeev
Wiersma, Diederik S
description In real photonic crystals light is scattered by the imperfections of the periodic potential. We study experimentally the propagation of diffused light in silicon inverse opals and report an exceptionally reduced diffusion constant of 3.0+/-0.7 m(2)/s, in samples which are only partially disordered. Waves scattered both by the lattice planes and by their imperfections interfere and light is efficiently trapped in this hybrid scattering regime. Not only higher quality crystals, but also random materials present an order of magnitude bigger diffusion constant and hence weaker scattering.
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title Exceptional reduction of the diffusion constant in partially disordered photonic crystals
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