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

S.R. Huisman, Georgios Ctistis, S. Stobbe, Allard Mosk, Jennifer Lynn Herek, Aart Lagendijk, P. Lodahl, Willem L. Vos, Pepijn Willemszoon Harry Pinkse

Research output: Contribution to journalArticleAcademicpeer-review

32 Citations (Scopus)


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 languageEnglish
Article number155154
Pages (from-to)155154:1-5
JournalPhysical review B: Condensed matter and materials physics
Issue number15
Publication statusPublished - 2012


  • METIS-288906
  • IR-84693


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