Unidirectional Wave Propagation in Low-Symmetric Colloidal Photonic-Crystal Heterostructures

Article, Other literature type English OPEN
Yannopapas, Vassilios (2015)
  • Publisher: MDPI
  • Journal: Nanomaterials, volume 5, issue 1, pages 376-385 (issn: 2079-4991, eissn: 2079-4991)
  • Related identifiers: pmc: PMC5312843, doi: 10.3390/nano5010376
  • Subject: multiple-scattering | Chemistry | QD1-999 | photonic crystals | wave transmission | Article
    arxiv: Physics::Optics

We show theoretically that photonic crystals consisting of colloidal spheres exhibit unidirectional wave propagation and one-way frequency band gaps without breaking time-reversal symmetry via, e.g., the application of an external magnetic field or the use of nonlinear materials. Namely, photonic crystals with low symmetry such as the monoclinic crystal type considered here as well as with unit cells formed by the heterostructure of different photonic crystals show significant unidirectional electromagnetic response. In particular, we show that the use of scatterers with low refractive-index contrast favors the formation of unidirectional frequency gaps which is the optimal route for achieving unidirectional wave propagation.
  • References (41)
    41 references, page 1 of 5

    1. Zolla, F.; Renversez, G.; Nicolet, A.; Kuhlmey, B.; Guenneau, S.; Felbacq, D. Foundations of Photonic Crystal Fibres; Imperial College Press: London, UK, 2005.

    2. Bozhevolnyi, S. Plasmonic Nanoguides and Circuits; Pan Stanford Publishing: Singapore, 2009.

    3. Haldane, F.D.M.; Raghu, S. Possible realization of directional optical waveguides in photonic crystals with broken time-reversal symmetry. Phys. Rev. Lett. 2008, 100, 013904.

    4. Wang, Z.; Chong, Y.D.; Joannopoulos, J.D.; Soljacˇic´, M. Reflection-free one-way edge modes in a gyromagnetic photonic crystal. Phys. Rev. Lett. 2008, 100, 013905.

    5. Wang, Z.; Chong, Y.D.; Joannopoulos, J.D.; Soljacˇic´, M. Observation of unidirectional backscattering-immune topological electromagnetic states. Nature 2009, 461, 772-775.

    6. Yu, Z.; Veronis, G.; Wang, Z.; Fan, S. One-way electromagnetic waveguide formed at the interface between a plasmonic metal under a static magnetic field and a photonic crystal. Phys. Rev. Lett. 2008, 100, 023902.

    7. Ao, X.; Lin, Z.; Chan, C.T. Dirac spectra and edge states in honeycomb plasmonic lattices. Phys. Rev. B 2009, 80, 033105.

    8. Li, Y.; Zhang, Q.; Nurmikko, A.V.; Sun, S. Enhanced magnetooptical response in dumbbell-like Ag CoFe2O4 nanoparticle pairs. Nano Lett. 2005, 5, 1689-1692.

    9. González-Díaz, J.B.; García-Martín, A.; García-Martín, J.M.; Cebollada, A.; Armelles, G.; Sepúlveda, B.; Alaverdyan, Y.; Käll, M. Plasmonic Au/Co/Au nanosandwiches with enhanced magneto-optical activity. Small 2008, 4, 202-205.

    10. Jain, P.K.; Xiao, Y.; Walsworth, R.; Cohen, A.E. Surface plasmon resonance enhanced magneto-optics (SuPREMO): Faraday rotation enhancement in gold-coated iron oxide nanocrystals. Nano Lett. 2009, 9, 1644-1650.

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