Physics – Optics
Scientific paper
2008-07-23
Physics
Optics
5 pages, 5 figures
Scientific paper
10.1103/PhysRevB.79.195441
We show that pulse shaping techniques can be applied to tailor the ultrafast temporal response of the strongly confined and enhanced optical near fields in the feed gap of resonant optical antennas (ROAs). Using finite-difference time-domain (FDTD) simulations followed by Fourier transformation, we obtain the impulse response of a nano structure in the frequency domain, which allows obtaining its temporal response to any arbitrary pulse shape. We apply the method to achieve deterministic optimal temporal field compression in ROAs with reduced symmetry and in a two-wire transmission line connected to a symmetric dipole antenna. The method described here will be of importance for experiments involving coherent control of field propagation in nanophotonic structures and of light-induced processes in nanometer scale volumes.
Brixner Tobias
Hecht Bert
Huang Sheng-Jun
Tuchscherer Philip
Voronine Dmitri V.
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