Amorphous photonic lattices: Band gaps, effective mass, and suppressed transport

Mikael Rechtsman, Alexander Szameit, Felix Dreisow, Matthias Heinrich, Robert Keil, Stefan Nolte, Mordechai Segev

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

We study, experimentally and numerically, amorphous photonic lattices and the existence of band gaps therein. Our amorphous system comprises 2D waveguides distributed randomly according to a liquidlike model responsible for the absence of Bragg peaks, as opposed to ordered lattices with disorder which always exhibit Bragg peaks. In amorphous lattices the bands comprise localized states, but we find that defect states residing in the gap are more localized than the localization length of states within the band. Finally, we show how the concept of effective mass carries over to amorphous photonic lattices.

Original languageEnglish (US)
Article number193904
JournalPhysical review letters
Volume106
Issue number19
DOIs
StatePublished - May 13 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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