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Observation of a Localization Transition in Quasiperiodic Photonic Lattices

Lahini, Y; Pugatch, R; Pozzi, F; Sorel, M; Morandotti, R; Davidson, N; Silberberg, Y; (2009) Observation of a Localization Transition in Quasiperiodic Photonic Lattices. PHYS REV LETT , 103 (1) , Article 013901. 10.1103/PhysRevLett.103.013901. Green open access

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Abstract

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.

Type: Article
Title: Observation of a Localization Transition in Quasiperiodic Photonic Lattices
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.103.013901
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.103.013901
Language: English
Additional information: © 2009 The American Physical Society
Keywords: METAL-INSULATOR-TRANSITION, ANDERSON LOCALIZATION, SYSTEMS, LIGHT, DIFFUSION, WAVE
UCL classification: UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/704637
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