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Optical properties of honeycomb photonic structures

Artem D. Sinelnik, Mikhail V. Rybin, Stanislav Y. Lukashenko, Mikhail F. Limonov, and Kirill B. Samusev
Phys. Rev. A 95, 063837 – Published 23 June 2017
Physics logo See Focus story: Image—Honeycomb Diffraction

Abstract

We study, theoretically and experimentally, optical properties of different types of honeycomb photonic structures, known also as “photonic graphene.” First, we employ the two-photon polymerization method to fabricate the honeycomb structures. In the experiment, we observe a strong diffraction from a finite number of elements, thus providing a unique tool to define the exact number of scattering elements in the structure with the naked eye. Next, we study theoretically the transmission spectra of both honeycomb single layer and two-dimensional (2D) structures of parallel dielectric circular rods. When the dielectric constant of the rod materials ɛ is increasing, we reveal that a 2D photonic graphene structure transforms into a metamaterial when the lowest TE01 Mie gap opens up below the lowest Bragg band gap. We also observe two Dirac points in the band structure of 2D photonic graphene at the K point of the Brillouin zone and demonstrate a manifestation of Dirac lensing for the TM polarization. The performance of the Dirac lens is that the 2D photonic graphene layer converts a wave from point source into a beam with flat phase surfaces at the Dirac frequency for the TM polarization.

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  • Received 30 March 2017

DOI:https://doi.org/10.1103/PhysRevA.95.063837

©2017 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Focus

Key Image

Image—Honeycomb Diffraction

Published 23 June 2017

Predictions of diffraction patterns for honeycomb photonic crystals were part of a comprehensive study of these structures that may be useful in nanoscale photonic devices.

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Authors & Affiliations

Artem D. Sinelnik1, Mikhail V. Rybin2,3,*, Stanislav Y. Lukashenko1, Mikhail F. Limonov2,3, and Kirill B. Samusev2,3

  • 1Department of Nanophotonics and Metamaterials, ITMO University, St. Petersburg 197101, Russia
  • 2Ioffe Institute, St. Petersburg 194021, Russia
  • 3Department of Dielectric and Semiconductor Photonics, ITMO University, St. Petersburg 197101, Russia

  • *m.rybin@mail.ioffe.ru

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Issue

Vol. 95, Iss. 6 — June 2017

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