Authors: Torsten Stiehm Johannes Kern Marius Jürgensen Steffen Michaelis de Vasconcellos Rudolf Bratschitsch
Publish Date: 2016/04/26
Volume: 122, Issue: 5, Pages: 119-
Abstract
We present the thirdharmonic emission pattern of single and multiple gold nanoantennas excited by fewcycle infrared laser pulses The angular distribution of the nonlinear emission is measured by back focal plane imaging with a highnumericalaperture objective lens The thirdharmonic emission of a singlerod antenna has a dipolelike radiation pattern modified at the air–glass interface Simultaneous excitation of multiple antennas under the same laser focus results in interferences of the farfield thirdharmonic radiation which can be well explained using a dipole model
Keywords: