Observation of a Localization Transition in Quasiperiodic Photonic Lattices.
PHYS REV LETT
, Article 013901. 10.1103/PhysRevLett.103.013901.
We report the observation of the signature of a localization phase transition for light in one-dimensional quasiperiodic photonic lattices, by directly measuring wave transport inside the lattice. Below the predicted transition point an initially narrow wave packet expands as it propagates, while above the transition expansion is fully suppressed. In addition, we measure the effect of focusing nonlinear interaction on the propagation and find it increases the width of the localized wave packets.
|Title:||Observation of a Localization Transition in Quasiperiodic Photonic Lattices|
|Open access status:||An open access version is available from UCL Discovery|
|Additional information:||© 2009 The American Physical Society|
|Keywords:||METAL-INSULATOR-TRANSITION, ANDERSON LOCALIZATION, SYSTEMS, LIGHT, DIFFUSION, WAVE|
|UCL classification:||UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Engineering Science
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