Plasmonic gold nanodiscs fabricated into a photonic-crystal nanocavity

Article English OPEN
Sediq, K.N. ; Coles, D. ; Fry, P.W. ; Lidzey, D.G. (2016)
  • Publisher: IOP Publishing
  • Subject:
    arxiv: Physics::Optics

We fabricate and characterise an optical structure consisting of a photonic crystal L3 nanocavity containing two gold nanodisks placed close to a field antinode. We use finite difference time domain (FDTD) modelling to show that the optical properties of the nanocavity are sensitive to the physical separation between the gold nanodisks, and that at reduced separation, the q-factor of a cavity mode polarised parallel to the dimer long-axis is reduced, indicating coupling between the cavity mode and a localised plasmon. Preliminary experimental measurements indeed indicate a damping of the cavity mode in the presence of the dimer; a result consistent with the FDTD modelling. Such a scheme may be used to integrate plasmonic systems into all-optical photonic circuits.
  • References (27)
    27 references, page 1 of 3

    [1] S. A. Maier, Springer Science Business Media LLC (2007).

    [2] J. F. Li, Y. F. Huang , Y. Ding, Z. L. Yang , S. B. Li , X. S. Zhou , F. R. Fan, W. Zhang, Z. Y. Zhou , D. Y. Wu1 , B. Ren , Z. L. Wang and Z. Q. Tian, Nature Letters, 464, (2010).

    [3] J. N. Anker, W. P. Hall, O. Lyandres, N. C. Shah, J. Zhao and R. P. Van Duyne, Nature Materials, 7, (2008).

    [4] V. Giannini, A.I. Fernandez-Dominguez, Y. Sonnefraud, T. Roschuk, R. FernandezGarcia, and S.A. Maier, Small. vol. 6, no. 22, Nov 22. 2010, pp. 2498-2507.

    [5] S. Link and M.A. El-Sayed, Journal of Physical Chemistry B. vol. 103, no. 21, May 27. 1999, pp. 4212-4217.

    [6] Kelly KL, Coronado E, Zhao LL, Schatz GC (2003) J Phys Chem B 107:668

    [7] M. Barth, S. Schietinger, S. Fischer, J. Becker, N. Nüsse, T. Aichele, B. Löchel, C. Sönnichsen, and O. Benson, Nano Letters, 10, 3, 891 895 (2010).

    [8] T. Zhang, S. Callard, C. Jamois, C. Chevalier, D. Feng, and A. Belarouci, Nanotechnology, vol. 25, no. 31, Article ID 315201, 2014.

    [9] F. De Angelis, M. Patrini, G. Das, I. Maksymov, M. Galli, L. Businaro, L. C. Andreani, and E. Di Fabrizio, Nano Letters, 8, 8, 2321 2327 (2008).

    [10] M. Barth, N. Nusse, B. Lochel and O. Benson, Optics Letters, 34 1108 1110 (2009).

  • Metrics
    0
    views in OpenAIRE
    0
    views in local repository
    18
    downloads in local repository

    The information is available from the following content providers:

    From Number Of Views Number Of Downloads
    White Rose Research Online - IRUS-UK 0 18
Share - Bookmark