TY - JOUR
T1 - Amorphous photonic lattices
T2 - Band gaps, effective mass, and suppressed transport
AU - Rechtsman, Mikael
AU - Szameit, Alexander
AU - Dreisow, Felix
AU - Heinrich, Matthias
AU - Keil, Robert
AU - Nolte, Stefan
AU - Segev, Mordechai
PY - 2011/5/13
Y1 - 2011/5/13
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.106.193904
DO - 10.1103/PhysRevLett.106.193904
M3 - Article
AN - SCOPUS:79960627595
SN - 0031-9007
VL - 106
JO - Physical review letters
JF - Physical review letters
IS - 19
M1 - 193904
ER -