title: Active control over nanofocusing with nanorod plasmonic antennas.
abstract: Active control over light nanofocusing in a nanorod plasmonic antenna coupled to a photonic crystal cavity is proposed and demonstrated by means of full-vectorial 3D simulations. By varying the excitation of the cavity with laser beam spot size allows us to achieve a gradual control over light nanofocusing at the tip of the nanoantenna. The demonstrated control mechanism eliminates the need for nonlinear effects or mechanical reconfiguration and represents a step towards the implementation of reliable tunable subwavelength light sources.
authors: Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT, Australia. mis124@physics.anu.edu.au
authors: Ivan S
authors: IS
authors: Maksymov
authors: Andrey E
authors: AE
authors: Miroshnichenko
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D036103:Nanotechnology / Q000295:instrumentation*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*