|
Coherent phenomena such as superradiance, Fano resonances, and
electromagnetically induced transparency have long been thought of as
characteristic of atomic systems. However, it has recently been observed that
systems of metallic nanostructures supporting coupled surface plasmons also
exhibit these effects. Since plasmon coupling is controlled by the geometry
of multistructured plasmonic complexes, so are these effects, enabling one to
design optical lineshapes virtually "at whim" in these systems. Coherent
plasmonic clusters and complexes exhibit a unique sensitivity to changes in
their dielectric environment, [1] making them highly attractive for chemical
or biological sensors. [2] This property also makes these structures ideal for the development of responsive media, where voltage-applied changes in dielectric properties can induce large changes in optical properties in devices and media based on these structures.
[1] J. B. Lassiter, H. Sobhani, J. Fan, Janardan Kundu, F. Capasso, P. Nordlander, and N. J. Halas, Nano Letters 10, 3184-3189 (2010). [2] Jian Ye, Fangfang Wen, Heidar Sobhani, J. Britt Lassiter, Pol Van Dorpe, P. Nordlander, and N. J. Halas, Nano Letters 12. 1660-1667 (2012). |
|