Quasiperiodic light

Author:

Frazer Laszlo1ORCID,Mercier Thomas M.2,Krishnan Chirenjeevi2,Xu Zhou1,Liu Amelia C. Y.1,Yuan Gangcheng1,Kong Junhan1,Lagoudakis Pavlos G.2,Charlton Martin D. B.2,Funston Alison M.1

Affiliation:

1. Monash University

2. University of Southampton

Abstract

Quasiperiodicity is a form of spatial order that has been observed in quasicrystalline matter but not light. We construct a quasicrystalline surface out of a light emitting diode. Using a nanoscale waveguide as a microscope (NSOM), we directly image the light field at the surface of the diode. Here we show, using reciprocal space representations of the images, that the light field is quasiperiodic. We explain the structure of the light field with wave superposition. Periodic ordering is limited to at most six-fold symmetry. The light field exhibits 12-fold quasisymmetry, showing order while disproving periodicity. This demonstrates that a new class, consisting of projections from hyperspace, exists in the taxonomy of light ordering.

Funder

Australian Research Council

Centre of Excellence in Exciton Science

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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