Measurement of a band-edge tail in the density of states of a photonic-crystal waveguide

S.R. Huisman; G. Ctistis; S. Stobbe; A.P. Mosk; J.L. Herek; A. Lagendijk; P. Lodahl; W.L. Vos; P.W.H. Pinkse

doi:10.1103/PhysRevB.86.155154

Measurement of a band-edge tail in the density of states of a photonic-crystal waveguide

S.R. Huisman, G. Ctistis, S. Stobbe, A.P. Mosk, J.L. Herek, A. Lagendijk, P. Lodahl, W.L. Vos, P.W.H. Pinkse

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Abstract

We investigate light transport near the band edge of slow-light photonic-crystal waveguides using phase-sensitive near-field microscopy. We obtain and interpret high-resolution band structures, allowing the retrieval of the optical density of states for a one-dimensional periodic system with weak intrinsic disorder. Because of this disorder, the band edge is smeared out and the van Hove singularity is removed. The density of states shows a decaying “tail” in the band gap corresponding to Anderson-localized modes, as predicted by Lifshitz for solid-state systems

Original language	English
Article number	155154
Journal	Physical review B: Condensed matter and materials physics
Volume	86
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevB.86.155154
Publication status	Published - 2012

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10.1103/PhysRevB.86.155154

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abstract = "We investigate light transport near the band edge of slow-light photonic-crystal waveguides using phase-sensitive near-field microscopy. We obtain and interpret high-resolution band structures, allowing the retrieval of the optical density of states for a one-dimensional periodic system with weak intrinsic disorder. Because of this disorder, the band edge is smeared out and the van Hove singularity is removed. The density of states shows a decaying “tail” in the band gap corresponding to Anderson-localized modes, as predicted by Lifshitz for solid-state systems",

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AU - Huisman, S.R.

AU - Ctistis, G.

AU - Stobbe, S.

AU - Mosk, A.P.

AU - Herek, J.L.

AU - Lagendijk, A.

AU - Lodahl, P.

AU - Vos, W.L.

AU - Pinkse, P.W.H.

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Measurement of a band-edge tail in the density of states of a photonic-crystal waveguide

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